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Number and Algebra Raph14-56, NAP-Z1-19

Noel uses the number sentence  `14 xx 7 = 98`  to solve a problem.

Which problem could he solve with this number sentence?

 

  Noel has 14 pens and gives 7 to his friends.
  How many pens does he have left?

 
 

  Noel has 14 pens and shared them equally with 7 of his friends.
  How many pens did each get?

 
 

  Noel has 14 pens and gets 7 more.
  How many pens does he now have?

 
 

  Noel has 14 friends and buys 7 pens for each friend.
  How many pens did he buy?

 
Show Answers Only

`text(Noel has 14 friends and buys 7 pens for each friend.)`

`text(How many pens did he buy?)`

Show Worked Solution

`14 xx 7 = 98`  can be used for:

Noel has 14 friends and buys 7 pens for each friend.

How many pens did he buy?

Filed Under: Solving Problems - Multiply/Divide, TESTLET E Tagged With: NAPX-SingleAnswer

Number and Algebra Raph14-38, NAP-Z1-13

This scale is balanced.

What is the weight of the smaller ball?

 grams
Show Answers Only

`7\ text(grams)`

Show Worked Solution

`text(S)text(ince the scale is balanced, both sides must weigh 42 grams.)`

`text(Weight of ball)` `=42-35`  
  `=7\ text(grams)`  

Filed Under: Solving Problems - Add/Subtract, TESTLET A Tagged With: NAPX-SingleAnswer

Number and Algebra Raph14-37, NAP-Z1-13

This scale is balanced.

What is the unknown weight of the shape?

 kg
Show Answers Only

`9\ text(kg)`

Show Worked Solution

`text(S)text(ince the scale is balanced, both sides must weigh 30 kg.)`

`text(Weight of shape)` `=30-21`  
  `=9\ text(kg)`  

Filed Under: Solving Problems - Add/Subtract, TESTLET A Tagged With: NAPX-SingleAnswer

Statistics Raph14-26, NAP-Z1-09

Some students were asked to name their favourite colour.

Their responses are in the table below.

  

In total, how many students were asked?

 

Show Answers Only

`40`

Show Worked Solution
`text(Total number)` `= 15+12+13`  
  `=40`  

Filed Under: Data and Interpretation, TESTLET C Tagged With: NAPX-SingleAnswer

Statistics Raph14-25, NAP-Z1-09

Some students were asked to name their favourite food.

The table below shows their responses.
 


  

In total, how many students were asked?

 

Show Answers Only

`41`

Show Worked Solution
`text(Total number)` `= 12+14+15`  
  `=41`  

Filed Under: Data and Interpretation, TESTLET C Tagged With: NAPX-SingleAnswer

Number Raph14-23, NAP-Z1-08

Ginger was given these notes on her birthday.

In total, how much did Ginger receive?

$   
Show Answers Only

`$360`

Show Worked Solution
`text(Total money)` `=(3 xx 100) + (2 xx 20) + (2 xx 10)`  
  `=300 + 40 + 20`  
  `=$360`  

Filed Under: Money, TESTLET B Tagged With: NAPX-SingleAnswer

Number, NAPX-p107088v02 SA

The product of three different positive whole numbers is 48.

What is the smallest possible sum of the three different numbers?

 

Show Answers Only

`12`

Show Worked Solution
`48` `= 24 xx 2 xx 1,\ text(sum = 27)`
`48` `= 12 xx 4 xx 1,\ text(sum = 17)`
  `vdots`
`48` `=8 xx 3 xx 2,\ text(sum = 13)`
`48` `=6 xx 4 xx 2,\ text(sum = 12)`

 
`:.\ text(The smallest possible sum is 12, made up of 6, 4 and 2.)`

Filed Under: Multi-Step Problems Tagged With: Band 10, NAPX-SingleAnswer

Number, NAPX-p107088v01 SA

The product of three different positive whole numbers is 60.

What is smallest possible sum of the three different numbers?

 

Show Answers Only

`12`

Show Worked Solution

`text(Testing some possible combinations:)`

`60` `= 30 xx 2 xx 1,\ text(sum = 33)`
`60` `= 10 xx 3 xx 2,\ text(sum = 15)`
  `vdots`
`60` `= 6 xx 5 xx 2,\ text(sum = 13)`
`60` `=5 xx 4 xx 3,\ text(sum = 12)`

 

`:.\ text(The smallest possible numbers are 5, 4 and 3, with a sum of 12.)`

Filed Under: Multi-Step Problems Tagged With: Band 10, NAPX-SingleAnswer

Number, NAPX-p115611v04 SA

A 5-cent coin has a mass of 3.1 grams.

A 20-cent coin has a mass of 5.3 grams.

Jonathan has 198.4 grams of 5-cent coins.

Kevin has 964.6 grams of 20-cent coins.

How much more worth of coins does Kevin have than Jonathan, in cents?

$  

Show Answers Only

`$33.20`

Show Worked Solution
`text(Jonathan’s total)` `= text(Total mass of coins)/text(mass of 1 coin) xx text(5 cents)`
  `= 198.4/3.1 xx 5`
  `= 64 xx 5`
  `= 320\ text(cents)`

 

`text(Kevin’s total)` `= text(Total mass of coins)/text(mass of 1 coin) xx text(20 cents)`
  `= 964.6/5.3 xx 20`
  `= 182 xx 20`
  `= 3640\ text(cents)`

 

`:.\ text(Difference)` `= 3640 – 320`
  `= 3320\ text(cents)`
  `=$33.20`

Filed Under: Multi-Step Problems Tagged With: Band 10, NAPX-SingleAnswer

Number, NAPX-p115611v03 SA

A 10-cent coin has a mass of 6.2 grams.

A 5-cent coin has a mass of 2.9 grams.

Rico has 347.2 grams of 10-cent coins.

Jester has 301.6 grams of 5-cent coins.

How much more worth of coins does Rico have than Jester, in cents?

 

Show Answers Only

`text(40 cents)`

Show Worked Solution
`text(Rico’s total)` `= text(Total mass of coins)/text(mass of 1 coin) xx 10\ text(cents)`
  `= 347.2/6.2 xx 10`
  `= 56 xx 10`
  `= 560\ text(cents)`

 

`text(Jester’s total)` `= text(Total mass of coins)/text(mass of 1 coin) xx text(5 cents)`
  `= 301.6/2.9 xx 5`
  `= 104 xx 5`
  `= 520\ text(cents)`

 

`:.\ text(Difference)` `= 560 – 520`
  `= 40\ text(cents)`

Filed Under: Multi-Step Problems Tagged With: Band 10, NAPX-SingleAnswer

Number, NAPX-p115611v02 SA

A 50-cent coin has a mass of 14.65 grams.

A 20-cent coin has a mass of 12.1 grams.

Karen has 307.65 grams of 50-cent coins.

Shyla has 508.2 grams of 20-cent coins.

How much more worth of coins does Karen have than Shyla?

$  

Show Answers Only

`text($2.10 cents)`

Show Worked Solution
`text(Karen’s total)` `= text(Total mass)/text(mass of 1 coin) xx text(50 cents)`
  `= 307.65/14.65 xx 50`
  `= 21 xx 50`
  `= 1050\ text(cents)`

 

`text(Shyla’s total)` `= text(Total mass)/text(mass of 1 coin) xx text(20 cents)`
  `= 508.2/12.1 xx 20`
  `= 42 xx 20`
  `= 840\ text(cents)`

 

`:.\ text(Extra money)` `= 1050 – 840`
  `= 210\ text(cents)`
  `=$2.10`

Filed Under: Multi-Step Problems, TESTLET F Tagged With: Band 10, NAPX-SingleAnswer

Number, NAPX-p115611v01 SA

A 20-cent coin has a mass of 12.5 grams.

A 5-cent coin has a mass of 2.9 grams.

Harold has 487.5 grams of 20-cent coins.

Rick has 179.8 grams of 5-cent coins.

How much more worth of coins does Harold have than Rick, in cents?

  cents

Show Answers Only

`text(470 cents)`

Show Worked Solution
`text(Harold’s total)` `= text(Total mass)/text(mass 1 coin) xx text(20 cents)`
  `= 487.5/12.5 xx 20`
  `= 39 xx 20`
  `= 780\ text(cents)`

 

`text(Rick’s total)` `= text(Total mass)/text(mass of 1 coin) xx text(5 cents)`
  `= 179.8/2.9 xx 5`
  `= 62 xx 5`
  `= 310\ text(cents)`

 

`:.\ text(Extra money)` `= 780 – 310`
  `= 470\ text(cents)`

Filed Under: Multi-Step Problems Tagged With: Band 10, NAPX-SingleAnswer

Statistics, NAPX-p107114v01 SA

Over a week, a pensioner drove the following distances, in kilometres, in her car.

12, 18, 11, 9, 13, 16, 12

What is his mean distance travelled in the car each day over the week?

 

Show Answers Only

`text(13 km)`

Show Worked Solution
`text(Mean)` `= (12 + 18 + 11 + 9 + 13 + 16 + 12)/7`
  `= 91/7`
  `= 13\ text(kilometres)`

Filed Under: Data and Statistics, TESTLET F Tagged With: Band 9, NAPX-SingleAnswer

Probability, NAPX-p170160v02 SA

A spinning wheel is divided into 56 equal sectors that are coloured either red or blue.

Chablis spins the wheel and has a 1 in 8 chance of landing in a sector coloured red.

How many blue sectors are there on the spinning wheel?

 

Show Answers Only

`49`

Show Worked Solution
`text(Number of red sectors)` `= 1/8 xx 56`
  `= 7`

 

`text(Number of blue sectors)` `=\ text(Total sectors – Red sectors)`
  `= 56 – 7`
  `= 49`

Filed Under: Probability, TESTLET F Tagged With: Band 9, NAPX-SingleAnswer

Probability, NAPX-p170160v01 SA

Harley has bag that contains 32 balls that are coloured either black or white.

Harley chose a ball without looking and had the chance of 3 in 8 of choosing a white ball.

How many black balls are in Harley's bag?

 

Show Answers Only

`20`

Show Worked Solution
`text(Number of white balls)` `= 3/8 xx 32`
  `= 12`

 

`text(Number of black balls)` `=\ text(Total balls – white balls)`
  `= 32 – 12`
  `= 20`

Filed Under: Probability Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p109430v02 SA

Alejandro makes sangria for his Spanish restaurant.

A glass of sangria has a mass of 240 grams and contains 120 millilitres of sangria.

What is the total mass of glasses that contain 3.6 litres of sangria?

  kilograms

Show Answers Only

`text(7.2 kilograms)`

Show Worked Solution

`text(1 litre = 1000 mL)`

`text(3.6 litres = 3600 mL)`

`text(Number of glasses)` `= (3600)/120`
  `= 30`

 
`text(S)text(ince every glass weighs 240 grams and)`

`text(1 kilogram = 1000 grams)`

`text(Total mass)` `= 30 xx 240`
  `= 7200\ text(grams)`
  `= 7.2\ text(kg)`

Filed Under: Rates, Ratios and Scale Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p109430v01 SA

Fillon produces fresh milk.

A bottle of milk contains 500 millilitres and has a mass of 600 grams.

How many litres of milk has Fillon produced if the bottles have a total mass of 15 kilograms?

  litres

Show Answers Only

`text(12.5 Litres)`

Show Worked Solution

`text(1 kilogram = 1000 grams)`

`text(15 kilograms = 15 000 grams)`

`text(Number of bottles)` `= (15\ 000)/600`
  `= 25`

 
`text(S)text(ince there is 500 mL in each bottle and)`

`text(1 Litre = 1000 mL,)`

`text(Volume)` `= 25 xx 500`
  `= 12\ 500\ text(mL)`
  `= 12.5\ text(Litres)`

Filed Under: Rates, Ratios and Scale Tagged With: Band 9, NAPX-SingleAnswer

Geometry, NAPX-p109193v02 SA

A scale diagram is shown below and represents the distances between 3 cities.
 


 

The distance from City A to City B is 84 kilometres.

What is the distance from City B to City C?

  kilometres

Show Answers Only

`text(36 km)`

Show Worked Solution
`text(Distance of one grid width)` `= 84/7`
  `= 12\ text(km)`

 
`text(City B and City C are 3 grids apart)`

`text(Distance City B to City C)` `= 12 xx 3`
  `= 36\ text(km)`

Filed Under: Maps and Directions Tagged With: Band 9, NAPX-SingleAnswer

Geometry, NAPX-p109193v01 SA

The ports A, B, and C are marked in the scale diagram below.
 


 

The distance from Port A to Port B is 35 kilometres.

What is the distance from Port B to Port C?

  kilometres

Show Answers Only

`text(52.5 km)`

Show Worked Solution
`text(Distance of one grid)` `= 35/4`
  `= 8.75\ text(km)`

 
`text(Port B and Port C are 6 grid widths apart)`

`text(Distance Port B to Port C)` `= 8.75 xx 6`
  `= 52.5\ text(km)`

Filed Under: Maps and Bearings, TESTLET F Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p110751v02 SA

In a bulk food supermarket, a kilogram of pepper costs $14.

Nancy bought 2.65 kilograms of pepper for her restaurant.

How much did Nancy pay for the pepper?

$  

Show Answers Only

`$37.10`

Show Worked Solution

`text(C)text(ost of 1 kg = $14)`

`text(C)text(ost of 2 kg) = 2 xx 14 = $28`

`text(C)text(ost of 0.1 kg) = 0.1 xx $14 = $1.40`

`text(C)text(ost of 0.65 kg)` `= 6 xx 1.4 + 0.70`
  `= $9.10` 

 

`:.\ text(C)text(ost of 2.65 kg)` `= 28 + 9.1`
  `= $37.10` 

Filed Under: Fractions and Decimals Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p110751v01 SA

A kilogram of apples cost $8.

Danica bought 6.35 kilograms of apples.

How much did Danica pay for the apples?

$  

Show Answers Only

`$50.80`

Show Worked Solution

`text(C)text(ost of 1 kg = $8)`

`text(C)text(ost of 6 kg) = 6 xx 8 = $48`

`text(C)text(ost of 0.1 kg) = 0.1 xx 8 = $0.80`

`text(C)text(ost of 0.35 kg)` `= 3 xx 0.8 + 0.4`
  `= $2.80` 

 

`:.\ text(C)text(ost of 6.35 kg)` `= 48 + 2.80`
  `= $50.80` 

Filed Under: Fractions and Decimals, Multi-Step Problems Tagged With: Band 9, NAPX-SingleAnswer

Measurement, NAPX-p169879v02 SA

Timothy sketched a plot of land with the following measurements in metres.
 


 

What is the area of the land in square metres?

  square metres

Show Answers Only

`text(487 m)²`

Show Worked Solution

`text(Divide the shape into 3 parts:)`
 

`text(Total Area)` `=\ text(Area 1 + Area 2 + Area 3)`
  `= (15 xx 12) + (23 xx 10) + (1/2 xx 11 xx 14)`
  `= 180 + 230 + 77`
  `= 487\ text(m)²`

Filed Under: Perimeter, Area and Volume Tagged With: Band 9, NAPX-SingleAnswer

Measurement, NAPX-p169879v01 SA

Hana sketches a shape with the following measurements in centimetres.
 

 
 

What is the area of the shape sketched by Hana?

  square centimetres

Show Answers Only

`text(90 cm)²`

Show Worked Solution

`text(Divide the shape into two parts.)`
 

`text(Total Area)` `=\ text(Area of triangle + Area of rectangle)`
  `= (1/2 xx 4 xx 9) + (8 xx 9)`
  `= 18 + 72`
  `= 90\ text(cm)²`

Filed Under: Perimeter, Area and Volume Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p111991v02 SA

Justin went to a lolly shop to buy some sweets and spent $12.

He bought a chocolate bar that cost $5 and 7 pieces of liquorice that cost 40 cents each.

The rest of his money was spent on musk sticks that costs $0.30 each.

How many musk sticks did he buy?

Show Answers Only

`18`

Show Worked Solution
`text(Money left)` `= 12 – 5 – (7 xx 0.40)`
  `= 7-2.80`
  `=$4.20`

 

`:.\ text(Musk sticks)` `= 4.2 -: 0.3`
  `=4.2 -: 3/10`
  `=4.2 xx 10/3`
  `= 18`

Filed Under: Financial Maths Tagged With: Band 9, NAPX-SingleAnswer

Number, NAPX-p111991v01 SA

Joanna went to the supermarket and spent $52.

She bought $15 worth of meat, 10 energy drinks costing $1.90 each and some bottles of water that cost $1.20 each.

How many bottles of water did she buy?

Show Answers Only

`15`

Show Worked Solution
`text(Money left for water)` `= 52 – 15 – (10 xx 1.9)`
  `= 52-15-19`
  `=$18`

 

`:.\ text(Bottles of water)` `= 18 ÷ 1.2`
  `=18 -: 6/5`
  `=18 xx 5/6`
  `= 15`

Filed Under: Financial Maths Tagged With: Band 9, NAPX-SingleAnswer

Probability, NAPX-p110739v02 SA

Shawn has a bag that holds one blue ball, one red ball and one green ball.

Shawn picks one ball without looking, records its colour and puts it back in the bag.

He repeated this process 60 times and summarises the results in the table below.
 

   

What is the difference between the expected and actual number of red balls picked?

 

Show Answers Only

`3`

Show Worked Solution

`text(Probability of grabbing a red ball) = 1/3`

`text(Expected number of red balls)` `= 1/3 xx 60`
  `= 20`

 

`:.\ text(Difference)` `= 23 – 20`
  `= 3`

Filed Under: Probability Tagged With: Band 8, NAPX-SingleAnswer

Probability, NAPX-p110739v01 SA

Elaine rolled a regular die 100 times.

She recorded if an even or odd number appeared each time.

The table below represents the recorded data.
 

What is the difference between the expected number of odd rolls to the actual odd rolls recorded?

 

Show Answers Only

`8`

Show Worked Solution

`text(Probability of odd number) = 3/6 = 50text(%)`

`text(Expected number of odd rolls)`

`= 50text(%) xx 100`

`= 50`
 

`:.\ text(Difference)` `= 50 – 42`
  `= 8`

Filed Under: Probability Tagged With: Band 8, NAPX-SingleAnswer

Measurement, NAPX-p106471v02 SA

Martin has a piece of wire that measures 1.32 metres.

He cuts off a 470 millimetre piece of it.

How long is the remaining wire in millimetres?

  mm

Show Answers Only

`850\ text(mm)`

Show Worked Solution

`text(Conversion: 1 metre = 1000 millimetres)`

`text(Length remaining)` `= (1.320 xx 1000) – 468`
  `= 1320 – 470`
  `= 850\ text(mm)`

Filed Under: Units of Measurement Tagged With: Band 8, NAPX-SingleAnswer

Measurement, NAPX-p106471v01 SA

Henry is 175 centimetre tall.

He stands on top of a 425 millimetres chair.

How tall is Henry now in centimetres?

  cm

Show Answers Only

`text(217.5 centimetres)`

Show Worked Solution

`text(Conversion: 10 millimetres = 1 centimetre)`

`text(Total height)` `= (425 ÷ 10) + 175`
  `= 42.5 + 175`
  `= 217.5\ text(cm)`

Filed Under: Units of Measurement Tagged With: Band 8, NAPX-SingleAnswer

Probability, NAPX-p169473v02

Noel has a bowl full of red chewing gum balls and blue chewing gum balls.

The chance of randomly picking a red chewing gum ball is 85%.

What is the probability of randomly picking a blue chewing gum ball?

  %
Show Answers Only

`text(15%)`

Show Worked Solution

`P(text(Red)) + P(text(Blue)) = 100text(%)`

`P(text(blue))` `= 100 – 85`
  `= 15text(%)`

Filed Under: Probability Tagged With: Band 6, NAPX-SingleAnswer

Probability, NAPX-p169473v01

Tristan's laundry has a lost clothing basket that contains only black and white socks.

The probability of randomly picking a black sock from the basket is 35%.

What is the probability of randomly picking a white sock?

  %
Show Answers Only

`text(65%)`

Show Worked Solution

`P(text(white)) + P(text(black)) = 100text(%)`

`P(text(white))` `= 100 – 35`
  `= 65text(%)`

Filed Under: Probability Tagged With: Band 6, NAPX-SingleAnswer

Number, NAPX-p169217v02 SA

Karl picked 102 apples from his family orchard and packed them into small boxes.

Each box can hold 12 apples.

What is the smallest number of boxes Karl needs to make sure all the apples are packed?

Show Answers Only

`text(9)`

Show Worked Solution
`text(Boxes needed)` `= 102 ÷ 12`
  `= 8\ text(remainder 6)`
  `= 9\ text{boxes (round up)}`

Filed Under: Basic Concepts and Calculations Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p169217v01 SA

George has 84 toys in his collection.

He wanted to pack them into containers which can hold 5 toys each.

What is the smallest number of containers George needs to make sure all the toys are packed away?

Show Answers Only

`text(17)`

Show Worked Solution
`text(Containers needed)` `= 84 ÷ 5`
  `= 16\ text(remainder 4)`
  `~~ 17\ text{boxes (round up)}`

Filed Under: Basic Concepts and Calculations Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p168014v02 SA

Catherine owns a walk-in wardrobe with 13 different types of bags.

There are the same number of bags of each type.

She has a total of 65 bags.

How many bags of each type does she have?

 

Show Answers Only

`5 \ text{bags}`

Show Worked Solution
`text{Bags of each type}` `= frac{65}{13}`
  `= 5 \ text{bags}`

Filed Under: Word Problems Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p168014v01 SA

Richard has a bookshelf that he splits into 8 different categories.

He has a total of 152 books.

He has the same number of books in each category.

How many books in each category does he own?

 

Show Answers Only

`19 \ text{books}`

Show Worked Solution
`text{Books in each category}` `= frac{152}{8}`
  `= 19 \ text{books}`

Filed Under: Basic Concepts and Calculations Tagged With: Band 5, NAPX-SingleAnswer

Measurement, NAPX-p168010v02 SA

A rectangular building has a perimeter of is 300 m.
 


 

What is the value of the width `x`?

  metres

Show Answers Only

`30 \ text{m}`

Show Worked Solution

`text{Perimeter = Sum of all sides}`

`300` `= 120 + 120 + x + x`
`300` `= 240 + 2x`
`60` `= 2x`
`:.x` `=30`

Filed Under: Perimeter, Area and Volume, TESTLET B Tagged With: Band 7, NAPX-SingleAnswer

Measurement, NAPX-p168010v01 SA

The perimeter of a rectangular box is 130 m.
 


 

What is the value of the width `x`?

  metres

Show Answers Only

`50 \ text{m}`

Show Worked Solution

`text{Perimeter = Sum of all sides}`

`130` `= 15 + 15 + x + x`
`130` `= 30 + 2x`
`100` `= 2x`
`:. x` `=50`

Filed Under: Perimeter, Area and Volume, TESTLET E Tagged With: Band 7, NAPX-SingleAnswer

Number, NAPX-p169007v02 SA

Eisha won a jar of candy with 366 pieces of candy in it at her school fete.

She gave a hand full each to five of her friends.

Eisha then counted the remaining candy and found she had 232 pieces left.

How many pieces of candy did Eisha give to her friends?

Show Answers Only

`text(134)`

Show Worked Solution
`text(Pieces given to friends)` `= 366 – 232`
  `=134`

Filed Under: Word Problems Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p169007v01 SA

Jason bought 325 eggs from the market.

When he was driving home, he had an accident and some of the eggs broke.

He counted that there were 241 eggs without any cracks.

How many eggs broke?

 

Show Answers Only

`text(84 eggs)`

Show Worked Solution
`text(Number of broken eggs)` `= 325 – 241`
  `= 84`

Filed Under: Basic Concepts and Calculations, TESTLET AN Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p116689v02

The tallest living giraffe is measured at five thousand, seven hundred and eight millimetres tall.

Write this as a number in the box below

  millimetres

Show Answers Only

`5708 \ text{millimetres}`

Show Worked Solution

`5708 \ text{millimetres}`

Filed Under: Number and Place Value Tagged With: Band 6, NAPX-SingleAnswer

Number, NAPX-p116689v05

The exact length of great white shark is measured as five thousand and ninety six millimetres.

Write this as a number in the box below

  millimetres

Show Answers Only

`5096 \ text{millimetres}`

Show Worked Solution

`5096 \ text{millimetres}`

Filed Under: Number and Place Value Tagged With: Band 6, NAPX-SingleAnswer

Number, NAPX-p146458v08

What is the highest number that can be made using two of these cards?
 


 

Write the number in the box below.

 

Show Answers Only

`75`

Show Worked Solution

`75`

Filed Under: Number and Place Value Tagged With: Band 5, NAPX-SingleAnswer

Number, NAPX-p146458v07 SA

What is the smallest number that can be made using two of these cards?
 

     
 

Write the number in the box.

 

Show Answers Only

`14`

Show Worked Solution

`14`

Filed Under: Number and Place Value Tagged With: Band 5, NAPX-SingleAnswer

Algebra, NAPX-p116624v05

The scales below are evenly balanced.
 


 

What is the mass of the small cube?

   grams
Show Answers Only

`26 grams` 

Show Worked Solution
  `text{Mass of small cube}` `= 44 – 18`
    `= 26 grams`

Filed Under: Solving Problems - Add/Subtract Tagged With: Band 4, NAPX-SingleAnswer

Algebra, NAPX-p116624v04

The scales below are evenly balanced.
 

 
 

What is the mass of the small cube?

   grams
Show Answers Only

`13 grams` 

Show Worked Solution
  `text{Mass of small cube}` `= 32 – 19`
    `= 13 grams`

Filed Under: Solving Problems - Add/Subtract Tagged With: Band 4, NAPX-SingleAnswer

Algebra, NAPX-p116624v03

The scale pictured below is balanced.
 


 

What is the weight of the cube?

   grams
Show Answers Only

`31 \ text{grams}`

Show Worked Solution

`text{S} text{ince the scale is balanced, weight on both sides = 44 grams}`

`text(Weight of cube)` `= 44 – 13`
  `= 31\ text(grams)`

Filed Under: Solving Problems - Add/Subtract Tagged With: Band 4, NAPX-SingleAnswer

Algebra, NAPX-p116624v02

The scale pictured below is balanced.
 


 

What is the weight of the rounded figure?

   kilograms
Show Answers Only

`5\ text{kg}`

Show Worked Solution

`text{S} text{ince the scale is balanced, the weight on both sides = 24 kg.}`

`text{Missing weight}` `=24 – 19`  
  `= 5\ text(kg)`  

Filed Under: Solving Problems - Add/Subtract, TESTLET C Tagged With: Band 4, NAPX-SingleAnswer

Statistics, NAPX-p116609v03

In a school, a group of students were given a list of 4 subjects and asked to pick their favourite.

A table of their responses is shown below.
 


 

How many students were asked this question altogether?

Show Answers Only

`44`

Show Worked Solution

`text{Mathematics} = 5 + 5 + 5 + 2 = 17`

`text{Science} = 5 + 5 = 10`

`text{English} = 5 + 1 = 6`

`text{History} = 5 + 5 +  1 = 11`

`:.\ text{Total}  = 17 + 10 + 6 + 11 = 44`

Filed Under: Data and Interpretation Tagged With: Band 4, NAPX-SingleAnswer

Statistics, NAPX-p116609v02

Some people were asked which type of music they like to listen to most.

The table below shows their responses.

In total, how many people were asked which type of music they like?

Show Answers Only

`51`

Show Worked Solution

`text{Pop} = 5 + 5 + 5 + 2 = 17`

`text{Rock} = 5 + 5 + 5 + 5 + 1 = 21`

`text{Jazz} = 5 + 5 + 3 = 13`

`:.\ text{Total}  = 17 + 21 + 13 = 51`

Filed Under: Data and Interpretation, TESTLET B Tagged With: Band 4, NAPX-SingleAnswer

Number, NAPX-Z4-CA25 v2

In a class of 36 students, a survey was conducted and each of the students was asked if they own a bicycle.

If  `2/3`  of the students answered yes, how many students own a bicycle?

Show Answers Only

`24`

Show Worked Solution

`text(Students who own a bicycle)`

`= 2/3 xx 36`

`= 24`

Filed Under: Fractions and Decimals, TESTLET C Tagged With: NAPX-SingleAnswer

Statistics, NAPX-Z4-CA24 v2

A lemonade stand is located in a market.

The table below shows the number of lemonade cups sold by the stand over 5 days.

   

The price of each cup of lemonade is $2.50.

What is the mean earnings of the lemonade stand per day?

$ 
Show Answers Only

`$150`

Show Worked Solution
  `text{Mean number of cups}` `= frac{58 + 62 + 55 + 65 + 60}{5}`
    `= 60`

 

  `text{Mean daily earnings}` `= 60 xx 2.50`
    `= $150`

Filed Under: Data and Statistics, TESTLET B Tagged With: NAPX-SingleAnswer

Statistics, NAPX-Z4-CA24 v1

Bottles are put inside crates.

The table below shows the number of bottles inside 5 crates.

   

The weight of each bottle is 0.5 kg.

What is the mean weight of each crate?

   kilograms
Show Answers Only

`9.5\ text(kgs)`

Show Worked Solution
  `text{Mean number of bottles}` `= frac{17 + 20 + 24 + 16 + 18}{5}`
    `= 19`

 

  `text{Mean weight of crates}` `= 19 xx 0.5`
    `= 9.5\ text(kgs)`

Filed Under: Data and Statistics, TESTLET B Tagged With: NAPX-SingleAnswer

Algebra, NAPX-Z4-CA21 SA v2

The prices at a boutique burger shop can be seen below.

Each extra patty in the burger costs the same amount of money.

How much will a burger with 4 patties cost?

$  
Show Answers Only

`$38.20`

Show Worked Solution
  `text{C} text{ost of 1 extra patty}` `= 27.40 – 22.00`
    `= 5.40`

 

  `text{C} text{ost of burger with 4 patties}` `= 22.00 + 3.00 \ text{extra patties}`
    `= 22.00 + (3 xx 5.40)`
    `= 22.00 + 16.20`
    `= 38.20`

Filed Under: Patterns and Coordinate Geometry, TESTLET B Tagged With: NAPX-SingleAnswer

Algebra, NAPX-Z4-CA21 SA v1

The prices of extra large family pizzas can be seen below.
 

Each extra topping on the pizza costs the same amount of money.

How much will a pizza with 4 toppings cost?

$  
Show Answers Only

`$54.50`

Show Worked Solution
  `text{C} text{ost of 1 extra topping}` `= 41.50 – 35.00`
    `= 6.50`

 

  `text{C} text{ost of pizza with 4 toppings}` `= 35 + 3 \ text{extra toppings}`
    `= 35 + (3 xx 6.50)`
    `= 35 + 19.50`
    `= 54.5`

Filed Under: Patterns and Coordinate Geometry, TESTLET B Tagged With: NAPX-SingleAnswer

Probability, NAPX-Z4-CA20 SA v2

There are 10 balls in a box numbered from 1 to 10.

The probability of choosing a number higher than 6 is 40%.

What is the probability to get a number less than or equal to 6?

  %
Show Answers Only

`text(60%)`

Show Worked Solution

`Ptext{(less than or equal to 6)}`

  `= 1 – Ptext{(higher than 6)}`
  `= 1 – 0.40`
  `= 0.60`
  `= 60 text(%)`

Filed Under: Probability, TESTLET B Tagged With: NAPX-SingleAnswer

Algebra, NAPX-Z4-CA40 SA v2

Elsa wants to bake some cookies.

She needs the following 4 ingredients: flour, milk, egg, and butter.

She makes 250 grams of cookie dough and weighs each ingredient as follows:

  • 60% of the dough is flour.
  • The milk weighs the same as the butter.
  • The eggs weigh twice as much as the butter.

How many grams of eggs are needed to make the 250 grams of cookie dough?

 grams
Show Answers Only

`50\ text(grams)`

Show Worked Solution
`text(Mass of flour)` `= 60 text(%) xx 250`
  `= 150\ text(grams)`

 

`text(Weight of remaining ingredients)`

`= 250-150`

`= 100\ text(grams)`
 

`text(Let)\ \ x = text(weight of eggs)`

`1/2 x + 1/2 x + x` `= 100`
`2x` `= 100`
`:.x` `= 50\ text(grams)`

Filed Under: Multi-Step Problems, TESTLET F Tagged With: NAPX-SingleAnswer

Number, NAPX-Z4-CA38 SA v2

A zoologist records the number of eggs laid by 3 birds and the percentage of those bird eggs that hatched. 

 What percentage of the eggs from all 3 birds hatched?

   % 
Show Answers Only

`text(60%)`

Show Worked Solution

`text(Total hatched)`

`= 16 xx 0.5 + 24 xx 0.75 + 20 xx 0.50`

`= 8 + 18 + 10`

`= 36`

 

`:.\ text(Percentage of total hatched)`

`=\ text(number of eggs hatched)/text(total eggs) xx 100`

`= 36/((16+24+20)) xx 100`

`= 36/60 xx 100`

`= 60 text(%)`

Filed Under: Percentages, TESTLET F Tagged With: NAPX-SingleAnswer

Measurement, NAPX-Z4-CA37 SA v2

A cube has a surface area of 384 square centimetres.

What is the volume of the cube?

   cubic centimetres
Show Answers Only

`512\ text(cm³)`

Show Worked Solution

`text(Cube has 6 faces.)`

`text(Area of 1 face)` `= 384 -: 6`
  `= 64\ text(cm²)`
`text(Side length)` `= sqrt 464`
  `= 8\ text(cm)`

 

`:.\ text(Volume)` `=8^3`
  `= 512\ text(cm³)`

Filed Under: Perimeter, Area and Volume, TESTLET F Tagged With: NAPX-SingleAnswer

Probability, NAPX-Z4-CA36 SA v2

A professional darts player throws darts at a circular board that is divided into 4 sections. 

He records which section he hits each time and the results are summarised in the table below.

 

Based on Robert’s data, what is the probability that his next throw will land in section 2 or 3?

Express your answer as a percentage rounded to the nearest tenth.

 %
Show Answers Only

`text(33.8%)`

Show Worked Solution
`text(Number of throws)` `= 26 + 14 + 13 + 27`
  `= 80`

 

`:.\ text(Probability)` `= (14 + 13)/80`
  `= 27/80`
  `= 0.3375`
  `~~ 33.8text(%)`

Filed Under: Probability, TESTLET F Tagged With: NAPX-SingleAnswer

Probability, NAPX-Z4-CA36 SA v1

Robert throws darts at a circular board that is divided into 4 sections.

He records which section he hits each time and the results are summarised in the table below.

Based on Robert’s data, what is the probability that his next throw will land in section 1 or 2?

Express your answer as a percentage rounded to the nearest tenth.

 %
Show Answers Only

`text(48.6%)`

Show Worked Solution
`text(Number of throws)` `= 4 + 30 + 26 + 10`
  `= 70`

 

`:.\ text(Probability)` `= (4 + 30)/70`
  `= 34/70`
  `= 0.4857`
  `~~ 48.6text(%)`

Filed Under: Probability, TESTLET F Tagged With: NAPX-SingleAnswer

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