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Algebra, NAP-B4-CA17

Ice cream is put into a waffle cone so it fills the cone to the top.
 

The volume, `V`, of the cone is given by the rule  `V = (pir^2h)/3`,

where `r` is the radius of the cone in centimetres and `h` is the height in centimetres.

When  `h = 12`  and   `r = 3`, the volume of the cone is closest to

`38\ text(cm)³` `113\ text(cm)³` `339\ text(cm)³` `452\ text(cm)³`
 
 
 
 
Show Answers Only

`113\ text(cm)³`

Show Worked Solution
`V` `= (pi xx 3^2 xx 12)/3`
  `= 113.097…\ text(cm)³`
  `=113\ text{cm³  (nearest cm³)}`

Filed Under: Basic Algebra, Basic Algebra Tagged With: Band 8, smc-3179-20-Substitution, smc-3179-30-Index laws, smc-683-20-Substitution, smc-683-30-Index laws

Algebra, NAP-B4-CA16

Identical sticks are used to make this pattern of hexagons.
 

 
In this pattern the rule for the number of sticks is

 
5 × number of hexagons + 1
 
6 × number of hexagons − 1
 
5 × number of hexagons
 
6 × number of hexagons
Show Answers Only

`text(5 × number of hexagons + 1)`

Show Worked Solution
`text(Sticks in:     1 hexagon)` `=6`
`text(2 hexagons)` `=11`
`text(3 hexagons)` `=16`

 

`:.\ text(Sticks used = 5 × number of hexagons + 1)`

Filed Under: Patterns and Coordinate Geometry, Patterns and Coordinate Geometry Tagged With: Band 8, smc-3180-20-Patterns and images, smc-665-20-Patterns and images

Geometry, NAP-B4-CA20

Which of these are always equal in length?

 
the diagonals of a rhombus
 
the diagonals of a parallelogram
 
the opposite sides of a parallelogram
 
the opposite sides of a trapezium
Show Answers Only

`text(the opposite sides of a parallelogram)`

Show Worked Solution

`text(The opposite sides of a parallelogram are always equal.)`

Filed Under: Triangles and Other Geometric Properties, Triangles and Other Geometric Properties Tagged With: Band 8, smc-3189-25-Quadrilateral properties, smc-680-25-Quadrilateral properties

Algebra, NAP-B4-CA19

`y = 2x-3`

`y = 4x + 1`

Which value of `x` satisfies both of these equations?

`x = -2` `x = -1` `x = 1` `x = 2`
 
 
 
 
Show Answers Only

`x = -2`

Show Worked Solution

`text(If)\ x = −2,`

`2(-2)-3` `= -7`
`4(-2) + 1` `= -7`

 

`:. x = -2\ \ text(satisfies both.)`

Filed Under: Harder Equations, Harder Equations Tagged With: Band 8

Number, NAP-J3-NC07

Which of these numbers has a 3 in the thousandths place?

0.3244 2.8309 7.8231 23 082.8915
 
 
 
 
Show Answers Only

`7.8231`

Show Worked Solution

`text{The digits to the right of the decimal place are (in order):}`

`text(tenths, hundredths, thousandths, …)`

`:.\ text(The correct number is 7.8231.)`

Filed Under: Decimals, Decimals Tagged With: Band 8, smc-2136-10-Decimal order, smc-3146-10-Decimal order

Number, NAP-J3-NC05 SA

Peter is selling tickets for a raffle.

Each ticket costs $1.50.

Peter sells a total of 60 tickets.

How much money does Peter collect for selling the tickets?

$ 
Show Answers Only

`$90`

Show Worked Solution
`text(Money collected)` `= 60 xx $1.50`
  `=(60 xx $1) + (60 xx 0.5)`
  `= $90`

Filed Under: Financial Maths, Financial Maths Tagged With: Band 8, smc-3144-30-Profit/Cost/Revenue, smc-900-30-Profit/Cost/Revenue

Number, NAP-J3-NC04 SA

Vivian and Curtly throw a cricket ball from the boundary of the cricket oval to the wicket-keeper.

It takes Vivian's throw 3.48 seconds to reach the wicket-keeper.

It takes Curtly's throw 1.84 seconds.

What is the difference in the time taken to reach the wicket-keeper between the two throws?

  seconds
Show Answers Only

`1.64\ text(seconds)`

Show Worked Solution
`text(Time Difference)` `= 3.48 – 1.84`
  `= 3.48 + (0.16 – 2)`
  `= 1.64\ text(seconds)`

Filed Under: Decimals, Decimals Tagged With: Band 8, smc-2136-30-Word problems, smc-3146-30-Word problems

Number, NAP-J3-CA35 SA

A class of 28 students is surveyed. 21 students said they owned a mobile phone.

What percentage of the students surveyed owned a mobile phone?

  %
Show Answers Only

`75text(%)`

Show Worked Solution
`text(Percentage)` `= 21/28 xx 100`
  `= 75text(%)`

Filed Under: Percentages, Percentages Tagged With: Band 8, smc-3147-30-Word problems, smc-901-30-Word problems

Measurement, NAP-J3-CA31

Wooden beams for building house frames can be purchased in a number of lengths.

A hardware store can supply lengths of 850 millimetres, 80 centimetres, 190 centimetres, 0.855 metres and 1.8 metres.

Which wooden beam is the longest?

 
850 millimetres
 
80 centimetres
 
190 centimetres
 
0.855 metres
 
1.8 metres
Show Answers Only

`text(190 centimetres)`

Show Worked Solution

`text(Convert all measurements to metres:)`

`850\ text(mm) = 850/1000 = 0.85\ text(m)`

`80\ text(cm) = 80/100 = 0.8\ text(m)`

`190\ text(cm) = 190/100 = 1.9\ text(m)`

 

`:.\ text(Longest beam is 1.9 metres)`

Filed Under: Units of Measurement, Units of Measurement Tagged With: Band 8, smc-3152-20-Convert mm/cm/m/km, smc-668-20-Convert mm/cm/m/km

Number, NAP-J3-CA28 SA

A high school has 1000 students enrolled.

37 of the 1000 students have the first name John.

Write this as a decimal.

Show Answers Only

`0.037`

Show Worked Solution

`37/1000 = 0.037`

Filed Under: Decimals, Decimals Tagged With: Band 8, smc-2136-30-Word problems, smc-3146-30-Word problems

Statistics, NAP-J3-CA26

This graph shows a company's profit over a four year period.
 

 
Which conclusion can be reached from the graph?

 
The profit in Year 2 was one third of the profit in Year 1.
 
The profit fell by 50% from Year 3 to Year 4.
 
The profits were positive in Years 1 and 3, and negative in Years 2 and 4.
 
The profits were greater than $60 000 in the period between Year 1 and Year 4.
Show Answers Only

The profits were greater than $60 000 in the period between Year 1 and Year 4.

Show Worked Solution

`text(Important to note that profits in this table begin at)\ $61\ 000.`

`:.\ text(The profits were greater than $60 000 in the period)`

`text(between Year 1 and Year 4.)`

Filed Under: Data and Interpretation, Data and Statistics (7) Tagged With: Band 8, smc-3166-12-Bar charts, smc-674-12-Bar charts

Number, NAP-J3-CA25

Death Valley is the lowest point in the United States at −85 metres, which is below sea level.

King's Peak, also in the United States, is 4128 metres above sea level.

What is the difference, in metres, between Death Valley and King's Peak?

4213 metres 4203 metres 4045 metres 4043 metres
 
 
 
 
Show Answers Only

`4213\ text(metres)`

Show Worked Solution
`text(Difference)` `= 4128 – (- 85)`
  `= 4213\ text(metres)`

Filed Under: Basic Concepts and Calculations, Basic Concepts and Calculations Tagged With: Band 8, smc-3143-20-Basic operators, smc-676-20-Basic operators

Number, NAP-J3-CA24

Warwick needs to calculate  `13 xx 6 + 13 × 4`.

Which expression will give Warwick the same answer?

 
`13 xx (6 + 4)`
 
`13 xx (6 + 13)`
 
`(13 xx 2) + (6 xx 4)`
 
`(13 xx 2) + (6 + 4)`
Show Answers Only

`13 xx (6 + 4)`

Show Worked Solution

`13 xx 6 + 13 xx 4`

`= 13 xx (6 + 4)`

Filed Under: Basic Concepts and Calculations, Basic Concepts and Calculations Tagged With: Band 8, smc-3143-20-Basic operators, smc-676-20-Basic operators

Measurement, NAP-J3-CA23

The running time of a documentary is 157 minutes.

Michael starts watching the documentary at 12:07 pm.

What time will the documentary end in 24-hour time?

10:10 13:64 14:04 14:44 15:17
 
 
 
 
 
Show Answers Only

`14:44`

Show Worked Solution
`text(Running time)` `= 157\ text(minutes)`
  `= 2\ text(hours 37 minutes`

 

`:.\ text(Finish time)` `= 12:07\ text(pm + 2 hours 37 minutes)`
  `= 2:44\ text(pm)`
  `= 14:44`

Filed Under: Time, Time Tagged With: Band 8, smc-3154-10-Time intervals, smc-3154-40-Convert sec/min/hr/day, smc-3154-50-Reading 12/24 hr time, smc-903-10-Time intervals, smc-903-40-Convert sec/min/hr/day, smc-903-50-Reading 12/24 hr time

Number, NAP-J3-CA22 SA

Damon buys 25 kilograms of salt for his pool for $33.75.

The salt can be purchased in 1 kilogram bags.

How much does 9 kilograms of salt cost?

$  
Show Answers Only

`$12.15`

Show Worked Solution

`text(C)text(ost of 1 kilogram)`

`= 33.75/25`

`= $1.35`
 

`:.\ text(C)text(ost of 9 kilograms)`

`= 9 xx 1.35`

`= $12.15`

Filed Under: Rates, Ratios and Scale, Rates, Ratios and Scale Tagged With: Band 8, smc-3148-60-Rates and cost, smc-902-60-Rates and cost

Number, NAP-J3-CA21

Select the number line that correctly shows the positions of 0.05, 0.655 and 0.55.

 
 
 
 
 
 
 
 
Show Answers Only

Show Worked Solution

Filed Under: Basic Concepts and Calculations, Decimals Tagged With: Band 8, smc-3146-50-Number lines, smc-676-10-Number lines

Number, NAP-J4-NC05 SA

Pete's seafood restaurant took in $7703.40 on New Year's Eve.

Sam's Italian restaurant took in $5091.75 on the same night.

How much more money did Pete's restaurant take in than Sam's on New Year's Eve?

$   
Show Answers Only

`$2611.65`

Show Worked Solution

`$7703.40 – $5091.75`

`= $2611.65`

Filed Under: Financial Maths, Financial Maths Tagged With: Band 8, smc-3174-50-Other problems, smc-892-50-Other problems

Number, NAP-J4-NC03 SA

Sharnie is buying eggs for her restaurant's kitchen.

Each carton contains 12 eggs.

If she needs 90 eggs, how many cartons will she need to buy?

Show Answers Only

`text(8 cartons)`

Show Worked Solution

`90 ÷ 12 = 7\ text(remainder 6)`

`:.\ text(Sharnie need 8 cartons.)`

Filed Under: Basic Concepts and Calculations Tagged With: Band 8, smc-676-20-Basic operators

Number, NAP-J4-NC02

The diameter of the earth is approximately 13 000 kilometres.

Which of these shows 13 000 in scientific notation?

`1.3 xx 10^3` `1.3 xx 10^4` `1.3 xx 10^5` `1.3 xx 10^6`
 
 
 
 
Show Answers Only

`1.3 xx 10^4`

Show Worked Solution
`13\ 000` `= 1.3 xx 10\ 000`
  `= 1.3 xx 10^4`

Filed Under: Basic Concepts and Calculations, Basic Concepts and Calculations Tagged With: Band 8, smc-3173-50-Scientific notation, smc-890-50-Scientific notation

Number, NAP-J4-CA29 SA

Bella is an electrician.

She charges $150 to attend a job and then a fixed price for each minute she spends on the job.

The graph below shows Bella's charge based on the number of minutes she spends at the job.
 

 
How much will Bella charge for a job that takes 60 minutes?

$ 
Show Answers Only

`$330`

Show Worked Solution

`text(Charge to attend = $150)`

`text(From the graph,)`

`=>\ text(50 minute job costs $300)`

`:.\ text(C)text(ost per minute)` `= (300 – 150)/50 = $3`

 

`:.\ text(C)text(ost of 60 minute job)`

`= 150 + 60 xx 3`

`= $330`

Filed Under: Financial Maths, Financial Maths Tagged With: Band 8, smc-3174-20-Wages, smc-892-20-Wages

Geometry, NAP-J4-CA25

Spiro is making a scale drawing of his house.

  • The height of the garage in the scale model is 6 centimetres.
  • The height of Spiro's actual garage is 3 metres.

What does 1 centimetre in Spiro's scale drawing represent in his real house?

`text(1800 cm)` `text(200 cm)` `text(100 cm)` `text(50 cm)`
 
 
 
 
Show Answers Only

`text(50 cm)`

Show Worked Solution
`text(6 cm)` `= 3\ text(m)`
  `= 300\ text(cm)`
`:. 1\ text(cm)` `= 300 -: 6`
  `= 50\ text(cm)`

Filed Under: Ratio and Scale in Geometry, Ratio and Scale in Geometry Tagged With: Band 8, smc-3188-10-Scale models/drawings, smc-896-10-Scale models/drawings

Algebra, NAP-J4-CA21

Which expression is equivalent to  `6x + 12`?

`3(2x + 4)` `3(2x + 9)` `6(x + 6)` `6(x + 12)`
 
 
 
 
Show Answers Only

`3(2x + 4)`

Show Worked Solution

`3(2x + 4) = 6x + 12`

Filed Under: Basic Algebra, Basic Algebra Tagged With: Band 8, smc-3179-40-Distributive Law, smc-683-40-Distributive Law

Number, NAP-J4-CA20 SA

A high school has 1000 students enrolled.

37 of the 1000 students have the first name John.

Write this as a decimal.

Show Answers Only

`0.037`

Show Worked Solution

`37/1000 = 0.037`

Filed Under: Fractions and Decimals, Fractions and Decimals Tagged With: Band 8, smc-3175-70-Decimals – Word problems, smc-663-70-Decimals - Word problems

Statistics, NAP-J4-CA19

This graph shows a company's profit over a four year period.
 

 
Which conclusion can be reached from the graph?

 
The profit in Year 2 was one third of the profit in Year 1.
 
The profit fell by 50% from Year 3 to Year 4.
 
The profits were positive in Years 1 and 3, and negative in Years 2 and 4.
 
The profits were greater than $60 000 in the period between Year 1 and Year 4.
Show Answers Only

The profits were greater than $60 000 in the period between Year 1 and Year 4.

Show Worked Solution

`text(Important to note that profits in this table begin at)\ $61\ 000.`

`:.\ text(The profits were greater than $60 000 in the period)`

`text(between Year 1 and Year 4.)`

Filed Under: Data and Interpretation, Data and Statistics Tagged With: Band 8, smc-3190-12-Bar charts, smc-681-12-Bar charts

Measurement, NAP-J4-CA16

Cecil is designing a rectangular garden bed for growing vegetables in his yard.

He wants the garden bed to be at least 60 square metres.

He has dug out two sides, each 12.7 metres in length.

What is the smallest possible length of each of the other two sides, rounded to one decimal place?

`text(4 metres)` `text(4.7 metres)` `text(4.8 metres)` `text(5 metres)`
 
 
 
 
Show Answers Only

`text(4.8 metres)`

Show Worked Solution

`text(Let)\ \ d =\ text(length of other side)`

`12.7 xx d` `>= 60`
`d` `>= 6/12.7`
`d` `>= 4.72…\ text(m)`

 

`:.\ text{Smallest length is 4.8 m (to 1 d.p.)}`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3183-20-Area, smc-3183-85-PAV and algebra, smc-669-20-Area, smc-669-85-PAV and algebra

Geometry, NAP-J4-CA15 SA

What is the size of the angle marked `x` in the diagram below?

  `text(degrees)`
Show Answers Only

`65°`

Show Worked Solution

`text(Sum of internal angles)\ = 360°`

`:. x` `= 360 – (102 + 115 + 78)`
  `= 65°`

Filed Under: Triangles and Other Geometric Properties, Triangles and Other Geometric Properties, Triangles and Other Geometric Properties Tagged With: Band 8, smc-3165-20-Quadrilateral – find angle, smc-3189-20-Quadrilaterals – find angle, smc-680-20-Quadrilaterals - find angle

Algebra, NAP-J4-CA14

Paddy and Miffy each bought potatoes from the local farmers' market.

Paddy bought 2 kilograms for $2.50.

Miffy bought 6 kilograms for $7.50.

Which graph best represents the cost of potatoes at the farmers' market?

  
 
 
 
 
Show Answers Only

 

Show Worked Solution

Filed Under: Harder Equations, Harder Equations Tagged With: Band 8

Number, NAP-J4-CA12

Select the number line that correctly shows the positions of 0.05, 0.655 and 0.55.
 

 
 
 
 
 
 
 
 
Show Answers Only

Show Worked Solution

Filed Under: Fractions and Decimals, Fractions and Decimals Tagged With: Band 8, smc-3175-50-Decimal order/rounding, smc-3175-85-Fractions/Decimals and number lines, smc-663-50-Decimal order/rounding, smc-663-85-Fractions/Decimals and number lines

Measurement, NAP-J4-CA11 SA

Roger has a 0.95 metre length of wood.

He cuts a 250 millimetre piece off it.

How long is the remaining length of wood?

 millimetres
Show Answers Only

`700\ text(mm)`

Show Worked Solution
`text(Length remaining)` `= 0.95\ text(m) – 250\ text(mm)`
  `= 950\ text(mm) – 250\ text(mm)`
  `= 700\ text(mm)`

Filed Under: Units of Measurement, Units of Measurement Tagged With: Band 8, smc-3182-20-Convert mm/cm/m/km, smc-671-20-Convert mm/cm/m/km

Probability, NAP-J4-CA10

Petunia picks a marble from a bag and records its colour before placing it back in the bag.

She repeats this 36 times.

Her results are in the table below.
 

   
 
Using the table, what is the probability that the next marble Petunia picks will be red?

`1/3` `1/6` `1/12` `1/4`
 
 
 
 
Show Answers Only

`1/4`

Show Worked Solution
`text{Pr(Red)}` `= text(number of reds picked)/text(total picks)`
  `= 9/36`
  `= 1/4`

Filed Under: Probability, Probability Tagged With: Band 8, smc-3191-40-Relative frequency, smc-682-40-Relative frequency

Number, NAP-B4-NC17

A local soccer club has 1600 fans.

At a game, one-quarter of the fans wear a yellow jersey and the rest wear red.

25% of the red jerseys have a black stripe down the back.

How many red jerseys have a black stripe?

`100` `240` `300` `1200`
 
 
 
 
Show Answers Only

`300`

Show Worked Solution
`text(Total red jerseys)` `=3/4 xx 1600`
  `=1200`

 

`:.\ text(Red jerseys with black stripe)`
`=0.25 xx 1200`
`=300`

Filed Under: Percentages, Percentages Tagged With: Band 8, smc-3176-30-Word problems – other, smc-893-30-Word problems - other

Probability, NAP-B4-NC15

Nev spins the arrow 50 times.

 

Which table is most likely to show the result?

 
 
 
 
Show Answers Only

Show Worked Solution

`text(One strategy:)`

`X\ text{should be worth around 40% (20 spins),}`

`=>\ text(Eliminate the first and last options.)`

`text(The other relative sizes require the answer to be:)`

Filed Under: Probability, Probability Tagged With: Band 8, smc-3191-40-Relative frequency, smc-682-40-Relative frequency

Number, NAP-C4-CA21

Anna goes on a trail hike that is 3150 metres long.

 

Anna makes it to Lookout 2.

What percentage of the trail's total distance is left until she finishes?

`15.9text(%)` `18.9text(%)` `84.1text(%)` `116text(%)`
 
 
 
 
Show Answers Only

`15.9text(%)`

Show Worked Solution

`text(Percentage left to travel)`

`= {(3150 – 2650)}/3150 xx 100`

`= 15.9 text(%)`

Filed Under: Percentages, Percentages Tagged With: Band 8

Measurement, NAP-C4-CA20

Harry has an irregularly shaped back yard.
 

 
What is the area of Harry's back yard?

`text(93 m)²` `text(384 m)²` `text(544 m)²` `text(768 m)²`
 
 
 
 
Show Answers Only

`text(384 m)²`

Show Worked Solution
`text(Area)` `= (1/2 xx 14 xx 32) + (1/2 xx 10 xx 32)`
  `= 224 + 160`
  `= 384\ text(m)²`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3183-30-Area – Composite shapes, smc-669-30-Area - Composite shapes

Geometry, NAP-C4-CA17

Malcolm leaves his campsite and walks to the lookout.

The diagram shows the routes Malcolm can take and the travel times.
 

 
What is the shortest time that Malcolm can get to the lookout?

`28\ text(minutes)` `29\ text(minutes)` `30\ text(minutes)` `31\ text(minutes)`
 
 
 
 
Show Answers Only

`29\ text(minutes)`

Show Worked Solution

`text(Shortest time)` `= 10 + 5 + 9 + 5`
  `= 29\ text(minutes)`

Filed Under: Maps and Bearings, Maps and Bearings, Maps and Directions Tagged With: Band 8, smc-3164-40-Other map problems, smc-3187-35-Shortest distance, smc-670-35-Shortest distance

Probability, NAP-C4-CA16

A die in the shape of a rectangular prism has 6 faces with 1 to 6 dots.

Brian throws the die 1000 times to test it and records the outcomes.
 

 
What is the probability of throwing a six based on Brian's results?

`1/6` `1/40` `6/25` `12/500`
 
 
 
 
Show Answers Only

`6/25`

Show Worked Solution
`P(6)` `=240/1000`
  `=6/25`

Filed Under: Probability, Probability Tagged With: Band 8, smc-3191-40-Relative frequency, smc-682-40-Relative frequency

Measurement, NAP-E4-CA13

Grant cut two semicircles from a rectangle to create Shape 1.

He then joins the semicircles to each end of an identical rectangle to create Shape 2.

Which of the following statements is true about Shape 1 and Shape 2?

 
They have the same area and the same perimeter.
 
They have different areas and the same perimeter.
 
They have the same area and different perimeters.
 
They have different areas and different perimeters.
Show Answers Only

`text(They have different areas and the same perimeter.)`

Show Worked Solution

`text(The semi-circles in both shapes have the same length)`

`text(but have been turned around in Shape 2.)`

`:.\ text(They have different areas and the same perimeter.)`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3153-15-Perimeter (Circular), smc-3153-25-Area (Circular), smc-3183-15-Perimeter (Circular), smc-3183-25-Area (Circular), smc-669-15-Perimeter (Circular), smc-669-25-Area (Circular)

Number and Algebra, NAP-B2-33

Andre shaded a fraction of a square.
 

 
Which picture shows the same fraction shaded?

 
 
 
 
Show Answers Only

Show Worked Solution

Filed Under: Fractions and Decimals, Fractions and Decimals Tagged With: Band 8, smc-3087-50-Fractions and shapes, smc-691-50-Fractions and shapes

Probability, NAP-B2-29

Kenny can choose one of the 4 bowls.

He picks one ball from the bowl without looking.

Which bowl gives him the best chance of picking a black ball?

 
 
 
 
Show Answers Only

Show Worked Solution

`text(The chance of choosing a black ball for each option are:)`

`text(Option 1:)\ \ 3/5`

`text(Option 2:)\ \ 2/6=1/3`

`text(Option 3:)\ \ 4/8=1/2`

`text(Option 4:)\ \ 5/10 = 1/2`

`=>\ text(Option 1 gives him the best chance.)`

Filed Under: Chance, Chance Tagged With: Band 8, smc-3137-20-Selection, smc-699-20-Selection

Measurement, NAP-B2-34

Which shape has an area of 8 square units?
 

 
 
 
 
Show Answers Only

Show Worked Solution

`text(Area)` `=4 xx 2`
  `=8\ \ text(square units)`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3090-20-Area, smc-696-20-Area

Measurement, NAP-B2-32

Which measurement is equal to 2300 centimetres?

`0.23\ text(m)` `2.3\ text(m)` `23\ text(m)` `230\ text(m)`
 
 
 
 
Show Answers Only

`23\ text(m)`

Show Worked Solution

`text(Converting cm to metres),`

`2300\ text(cm)` `=2300 -: 100`
  `=23\ text(m)`

Filed Under: Units of Measurement, Units of Measurement Tagged With: Band 8, smc-3089-20-Convert mm/cm/m/km, smc-919-20-Convert mm/cm/m/km

Number and Algebra, NAP-B2-31

Hugo has 151 bottles to throw in empty recycling bins.

He can fit between 31 - 35 bottles in each bin.

How many bins does Hugo need?

`3` `4` `5` `6`
 
 
 
 
Show Answers Only

`5\ text(bins)`

Show Worked Solution

`text(If 5 bins are used, the bottles that fit)`

`=5 xx 31`

`=155`
 

`text(Note that the highest number that would fit into)`

`text{4 bins = 4 × 35 = 140 bottles (not enough)}`

Filed Under: Solving Problems - Multiply/Divide, Solving problems - Multiply/Divide Tagged With: Band 8, smc-3085-20-Division, smc-922-20-Division

Geometry, NAP-B2-30

Jenny and John create a 3D shape each.
 

 
The total sum of the vertices, edges and faces of Jenny's shape is 26.

What is the total sum of John's shape?

`12` `16` `20` `24`
 
 
 
 
Show Answers Only

`20`

Show Worked Solution

`text(Sum of vertices, edges and faces of John’s shape)`

`= 6 + 9 + 5`

`=20`

Filed Under: 2D-3D Shapes, 2D-3D Shapes Tagged With: Band 8, smc-3121-40-Faces and edges, smc-695-40-Faces and edges

Geometry, NAP-F1-34 SA

Megan joined some sticks to clay balls to make the object shown below.
 


 

Each stick was 4 centimetres long.

What was the total length of all sticks used to create this object?

   centimetres
Show Answers Only

`60\ text(cm)`

Show Worked Solution
`text(Total sticks used)` `= 3 + 3 + 3 + 3 + 3`
  `= 15`

 

`=>\ text(Total length of all sticks)`

`= 15 xx 4`

`= 60\ text(cm)`

Filed Under: 2D-3D Shapes, 2D-3D Shapes Tagged With: Band 8, smc-3050-20-3D objects, smc-704-20-3D objects

Number and Algebra, NAP-C1-34 SA

A soccer club orders 60 balls for the new season.

There are 8 teams in the club.

Each team is given 6 balls.

How many balls does the club have left?

Show Answers Only

`12`

Show Worked Solution
`text(Balls left)` `= 60 – (8 xx 6)`
  `= 60 – 48`
  `= 12`

Filed Under: Solving Problems - Multiply/Divide, Solving Problems - Multiply/Divide Tagged With: Band 8, smc-2907-30-Multi-Step, smc-3018-30-Multi-Step

Number and Algebra, NAP-D1-31 SA

Milly opens a hat store.

Each week she sells twice as many hats as the week before.

How many hats will Milly sell in week 7 if this pattern continues?

Show Answers Only

`640\ text(hats)`

Show Worked Solution

`text(Hats sold in week 5) = 80 xx 2 = 160`

`text(Hats sold in week 6) = 160 xx 2 = 320`

`text(Hats sold in week 7) = 320 xx 2 = 640`

Filed Under: Patterns, Patterns Tagged With: Band 8, smc-3021-30-Other patterns, smc-711-30-Other patterns

Number and Algebra, NAP-G1-34 SA

Archer has blocks with two square faces.

He builds the model below.
 

What is the height of the model in centimetres?

  centimetres
Show Answers Only

`12\ text(cm)`

Show Worked Solution

`text(2 × length of block = 18 cm)`

`text(Length of 1 block = 9 cm)`

`text(Side length of the square face)`

`= 9 ÷ 3`

`= 3\ text(cm)`
 

`:.\ text(Height)` `= 3 xx 4`
  `= 12\ text(cm)`

Filed Under: Solving Problems - Multiply/Divide, Solving Problems - Multiply/Divide, Solving Problems - Multiply/Divide, TESTLET F Tagged With: Band 8, smc-2907-30-Multi-Step, smc-2907-50-Measurement, smc-3018-30-Multi-Step, smc-3018-50-Measurement

Number and Algebra, NAP-G1-33 SA

Marcel has the six cards pictured below.
 


  

Marcel can arrange the six cards into a number sentence that make a total, as shown below.
 


 

What is the largest total Marcel can make using all the cards in a number sentence?

Show Answers Only

`971`

Show Worked Solution

`text(The largest total is made when the highest 3 digit)`

`text(number has the smallest 1 digit number deducted.)`

`=> 973 – 2 = 971`

Filed Under: Solving Problems - Add/Subtract, Solving Problems - Add/Subtract Tagged With: Band 8, smc-3017-20-Subtraction, smc-3017-40-3-digit calculations, smc-710-20-Subtraction, smc-710-40-3-digit calculations

Number and Algebra, NAP-E1-35 SA

Katrina puts some Rubik's cubes and identical bolts end to end.

3 Rubik's cubes are the same length as 4 bolts.

Each Rubik's cube is 8 cm long.
 


 

How many centimetres long is each bolt?

  centimetres
Show Answers Only

`text(6 cm)`

Show Worked Solution

`text(Total length of 3 Rubik’s cubes)`

`= 3 xx 8`

`= 24\ text(cm)`
 

`:.\ text(Length of one bolt)`

`= 24 ÷ 4`

`= 6\ text(cm)`

Filed Under: Solving Problems - Multiply/Divide, Solving Problems - Multiply/Divide Tagged With: Band 8, smc-2907-30-Multi-Step, smc-2907-50-Measurement, smc-3018-30-Multi-Step, smc-3018-50-Measurement

Number and Algebra, NAP-C2-35 SA

This grid shows the numbers from 1 to 20.
 

 
Percy crosses off all multiples of 2.

Penny then crosses off all prime numbers.

How many numbers will still be showing on the grid?

Show Answers Only

`text(2 numbers)`

Show Worked Solution

`text(Only 9 and 15 will be left.)`

`:.\ text(2 numbers will be left showing.)`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 8, smc-3083-75-Prime numbers, smc-3083-80-Other problems, smc-690-75-Prime numbers, smc-690-80-Other problems

Measurement, NAP-C2-33

A plan of Gil's back deck is drawn below.
 

 
What is the perimeter of Gil's deck?

`text(32 m)` `text(58 m)` `text(60 m)` `text(64 m)`
 
 
 
 
Show Answers Only

`text(64 m)`

Show Worked Solution

`text(Starting from the bottom left and moving clockwise,)`

`text(Perimeter of deck)`

`=14+12+14+5+6+4+6+3`

`= 64\ text(m)`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3090-30-Area – Composite shapes, smc-696-30-Area - Composite shapes

Number and Algebra, NAP-C2-32

The cost of bananas is $8.00 per kilogram.
 

 
The cost of 10 bananas is closest to

 
`$7`
 
`$12`
 
`$15`
 
`$80`
Show Answers Only

`$12`

Show Worked Solution

`text(1 banana weighs 0.15 kg)`

`=> 10\ text(bananas weigh 1.5 kg)`

`:.\ text(C) text(ost of 10 bananas)`

`= 1.5 xx $8`

`= $12`

Filed Under: Financial Mathematics, Fractions and Decimals, Fractions and Decimals, Money and Financial Mathematics Tagged With: Band 8, smc-2536-50-Multi-Step problems, smc-3086-50-Multi-Step problems, smc-3087-70-Decimal calculations, smc-691-70-Decimal calculations

Number and Algebra, NAP-C2-31

The value of  `39 xx 61`  is closest to

`1800` `1900` `2400` `2500`
 
 
 
 
Show Answers Only

`2400`

Show Worked Solution

`text(An estimate that makes the calculation easier:)`

`39 xx 61` `~~40 xx 60`
  `~~2400`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 8, smc-3083-30-Multiplication, smc-690-30-Multiplication

Measurement, NAP-F2-35 SA

Pablo cuts a paper rectangle in half.

 He then places one half over the other to make a new shape.
 

 
What is the perimeter of Pablo's new shape?

  centimetres
Show Answers Only

`32\ text(cm)`

Show Worked Solution

`text(Perimeter of new shape)`

`= 8 + 8 + 3 + 5 + 5 + 3`

`= 32\ text(cm)`

Filed Under: Perimeter, Area and Volume, Perimeter, Area and Volume Tagged With: Band 8, smc-3090-10-Perimeter, smc-696-10-Perimeter

Number and Algebra, NAP-F2-34 SA

`22.5 ÷`     `= 2.25`
Show Answers Only

`10`

Show Worked Solution
`22.5 ÷ 10` `=22.5/10`
  `=2.25`

Filed Under: Fractions and Decimals, Fractions and Decimals Tagged With: Band 8, smc-3087-70-Decimal calculations, smc-691-70-Decimal calculations

Number and Algebra, NAP-F2-32

A supermarket sells yoghurt in packs.

One pack of yoghurt has 8 tubs.
 

Each pack cost $6.

What is the highest number of tubs that can be bought for $40?

`42` `48` `52` `56` `64`
 
 
 
 
 
Show Answers Only

`48`

Show Worked Solution
`text(Number of packs)` `= 40 ÷ 6`
  `= 6\ \ text(remainder)\ 4`

 

`=> 6\ text(packs can be bought)`

`:.\ text(Total tubs of yoghurt)` `= 6 xx 8`
  `= 48`

Filed Under: Financial Mathematics, Money, Money and Financial Mathematics, Solving Problems - Multiply/Divide, Solving problems - Multiply/Divide Tagged With: Band 8, smc-2536-20-Whole $ calculations, smc-3020-15-Whole $ calculations, smc-3085-40-Multi-Step problem, smc-3086-20-Whole $ calculations, smc-922-40-Multi-Step problem

Number and Algebra, NAP-E2-38 SA

Katrina puts some Rubik's cubes and identical bolts end to end.

3 Rubik's cubes are the same length as 4 bolts.

Each Rubik's cube is 8 cm long.
 

 
How many centimetres long is each bolt?

   centimetres
Show Answers Only

`6\ text(cm)`

Show Worked Solution

`text(Total length of 3 Rubik’s cubes)`

`= 3 xx 8`

`= 24\ text(cm)`
 

`:.\ text(Length of one bolt)`

`= 24 ÷ 4`

`= 6\ text(cm)`

Filed Under: Solving Problems - Multiply/Divide, Solving problems - Multiply/Divide Tagged With: Band 8, smc-3085-40-Multi-Step problem, smc-922-40-Multi-Step problem

Number and Algebra, NAP-E2-37 SA

Nel grows 2 types of lettuces, iceberg and butter lettuce.

One week she took 900 lettuces to market.

Two thirds were iceberg and the rest were butter lettuces.

One quarter of the iceberg lettuces didn't sell.

How many iceberg lettuces didn't sell?

Show Answers Only

`150`

Show Worked Solution

`text(Number of iceberg lettuces)`

`= 2/3 xx 900`

`= 600`
 

`:.\ text(Number of unsold iceberg lettuces)`

`= 1/4 xx 600`

`= 150`

Filed Under: Fractions and Decimals, Fractions and Decimals Tagged With: Band 8, smc-3087-30-Fraction word problems, smc-691-30-Fraction word problems

Geometry, NAP-E2-36 SA

Manuel makes a cube from the net pictured below.
 

 
Manuel then added the numbers on opposite faces of the cube.

What is the greatest possible total that Manuel could get?

Show Answers Only

`12`

Show Worked Solution

`text(Adding the opposite faces:)`

`4 = 6 = 10`

`7 + 5 = 12`

`8 + 3 = 11`

`:.\ text(The greatest total is 12.)`

Filed Under: 2D-3D Shapes, 2D-3D Shapes Tagged With: Band 8, smc-3121-60-Nets, smc-695-60-Nets

Number and Algebra, NAP-E2-33 SA

Roger makes a 4 digit number from the cards below.
 

 
What is the closest number to 5000 that Roger can make?

Show Answers Only

`5049`

Show Worked Solution

`text(The two close numbers are:)`

`4950 and 5049`

`:.\ text(The closest number is 5049.)`

Filed Under: Number and Place, Number and Place Value Tagged With: Band 8, smc-3083-60-Place value, smc-690-60-Place value

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