Write a number in the box to make this number sentence correct.
| `33 -` | `= 17` |
Aussie Maths & Science Teachers: Save your time with SmarterEd
Write a number in the box to make this number sentence correct.
| `33 -` | `= 17` |
`16`
`33 – 16 = 17`
`=> 16`
Mandy is cutting out luggage tags from a plastic sheet.
Each luggage tag is identical and is pictured below.
Mandy throws away all pieces of plastic that are not complete tags.
What is the greatest number of luggage tags that Mandy can cut from the plastic sheet?
`text(10 luggage tags)`
Domi had some money in her purse.
She spent $3.75 and had $2.55 left .
How much money did Domi start with?
| $ |
`$6.30`
`text(Money Domi started with)`
`= $3.75 + $2.55`
`= $6.30`
Peter travels a lot for work.
The table below shows the months when Peter visited different places.
During how many months did Peter visit Adelaide but not New Zealand?
| `4` | `5` | `6` | `7` | `9` |
|
|
|
|
|
|
`5`
`text(Peter visited Adelaide and not NZ in January,)`
`text(February, September, October and November.)`
`=>5`
A shop sells eggs in small and large cartons.
A small carton holds 6 eggs.
A large carton holds 12 eggs.
Alice buys a total of 60 eggs.
She buys 3 large cartons and some small cartons.
How many small cartons does she buy?
`4`
`text(Eggs in 3 large cartons)`
`= 3 xx 12`
`= 36`
`text(Eggs needed in small cartons)`
`= 60 – 36`
`= 24`
`:.\ text(Small cartons needed)`
`= 24 ÷ 6`
`= 4`
Marcus hangs 2 pairs of pants on a line.
Any trousers next to each other share a peg.
He uses 3 pegs.
How many pegs would Marcus use to hang 5 pairs of pants?
`6`
`text(1 pair of trousers = 2 pegs)`
`text(2 pairs of trousers = 3 pegs)`
`text(3 pairs of trousers = 4 pegs)`
`vdots`
`text(5 pairs of trousers = 6 pegs)`
Damon had $1.40 in 5-cent coins in his piggy bank.
How many 5-cent coins does Damon have?
`28`
`text(One strategy:)`
`$1.40 = 14 xx 10¢`
`2 xx 5¢\ text(coins)\ = 10¢`
| `:.\ text(Number of 5¢ coins)` | `= 14 xx 2` |
| `= 28` |
Anne went for a walk everyday.
This graph shows how far Anne went on her walk each day in a week.
On how many days in the week did Anne walk at least 5 kilometres?
| `3` | `4` | `5` | `6` |
|
|
|
|
|
`4`
`text(Anne walked 5 km or more on Monday, Wednesday,)`
`text(Thursday and Saturday.)`
`=> 4\ text(days)`
This prism is made of cubes of the same size.
Some cubes have been taken out to form the object shown below.
How many cubes are in this new object?
`27`
`text(There are 16 cubes in each layer)`
`=>\ text(32 cubes in the top image.)`
`text(5 cubes have been taken out.)`
`:.\ 32 – 5 = 27\ text(cubes are left)`
An athletics club has 13 girls.
There are 6 more girls than boys.
How many people are in the club altogether?
`20`
| `text(Number of boys)` | `=13-6` |
| `=7` |
| `text(Total people in club)` | `=13+7` |
| `=20` |
Curly, Larry and Moe share a bag of oranges.
Curly and Larry get `1/5` of the oranges each.
What fraction of the bag of oranges does Moe get?
| `4/5` | `3/5` | `2/5` | `1/5` |
|
|
|
|
|
`3/5`
`text(Fraction that Curly and Larry get)`
`= 1/5 + 1/5`
`= 2/5`
`:.\ text(Fraction left for Moe)`
`= 1 – 2/5`
`= 3/5`
Bennelong writes a number on a piece of paper and hides it.
He gives his friend the following clues about his number.
What is Bennelong's number?
| `30` | `34` | `300` | `304` |
|
|
|
|
|
`304`
`text(Consider the following clues,)`
`text(Number has 30 tens,)`
`=>\ text(Number is 3 digits, starting with 30_)`
`text(The “ones” digit is one more than the “hundreds” digit,)`
`:.\ text(Number must be 304.)`
Andrew kept 3 bird cages.
Each bird cage had 8 birds in it.
He then bought one more bird cage and spread the birds out evenly between the 4 cages.
How many birds were then in each cage?
| `5` | `6` | `8` | `9` |
|
|
|
|
|
`6`
| `text(Total birds)` | `= 3 xx 8` |
| `= 24` |
`:.\ text(Birds in each of 4 cages)`
`= 24 ÷ 4`
`= 6`
| `13 +` | `+ 12 = 53` |
`28`
`text(Rearrange the number sentence:)`
| `53 – 13 – 12` | `= 53 – 25` |
| `= 28` |
| `:.\ \ ` |
|
`= 28` |
5.31 is equal to
|
|
`0.5 + 0.3 + 0.1` |
|
|
`5.0 + 0.3 + 0.1` |
|
|
`5 + 0.3 + 0.01` |
|
|
`5 + 0.03 + 0.01` |
`5 + 0.3 + 0.01`
`5 + 0.3 + 0.01`
Renee made a pie graph of the cost of things she paid for using her credit card over a month.
Which information can be found using this pie graph?
The amount of money she spent using her credit card
|
|
for going to the cinemas in the month. |
|
|
on electricity each week. |
|
|
on shopping each day. |
|
|
on rent for the month. |
`text(on rent for the month.)`
`text(S)text(ince the pie chart is for payments over a full)`
`text(month, the only information in the options that)`
`text(can be found is on rent for the month.)`
Manou held a dinner party for 24 people.
He planned on giving each guest 3 carrots in their baked dinner.
How many carrots did he need altogether?
`72\ text(carrots)`
| `text(Total carrots)` | `= 24 xx 3` |
| `= 72` |
Angelina takes 3 marbles out of the bag at the same time.
Which of these is impossible?
|
|
2 striped marbles and 1 white marble. |
|
|
2 white marbles and 1 grey marble. |
|
|
2 grey marbles and 1 striped marble. |
|
|
2 star marbles and 1 grey marble. |
`text(2 grey marbles and 1 striped marble.)`
`text(2 grey marbles and 1 striped marble.)`
`text{(since there is only 1 grey marble in the bag)}`
This grid map shows the names of some places along a hiking track.
The distance between The Terrace and Karuah is about 40 km.
Which of these is closest to the distance from Rees to Janis along the track?
| `text(30 km)` | `text(40 km)` | `text(50 km)` | `text(70 km)` |
|
|
|
|
|
`text(50 km)`
`text(Using the distance of The Terrace to Rees as 40 km,)`
`text(the best estimate for Rees to Janis is closest to 50 km)`
`text(among the options.)`
Ivan and Novik receive pocket money each week.
Ivan gets $3 and Novik gets $7.
After 12 weeks, how much more pocket money has Novik received than Ivan?
| $ |
`$48`
`text(Novik receives $4 more each week.)`
`:.\ text(Extra money after 12 weeks)`
`= 12 xx 4`
`= $48`
4 angles are labelled on the triangle pictured below.
Which angle is closest in size to 45°?
| `A` | `B` | `C` | `D` |
|
|
|
|
|
`A`
`text(Angles)\ B and C\ text(are closer to 90°.)`
`text(Angle)\ D\ text(is obtuse.)`
`text(Angle)\ A\ text(looks close to half a right angle.)`
`:.\ text(Angle)\ A`
Ryan is walking a trail that is 3250 metres long.
He has walked 2419 metres so far.
How many metres are left for him to walk?
| `831` | `839` | `841` | `1239` |
|
|
|
|
|
`831`
| `3250 – 2419` | `=1250-419` |
| `=850-19` | |
| `=831` |
`:.\ 831\ text(metres left to walk.)`
Calvin took half the chocolates in a box.
Without any other chocolates being taken, Jeremy took five more.
Seven chocolates were left in the box.
How many chocolates were in the box originally?
| `14` | `20` | `24` | `30` |
|
|
|
|
|
`24`
`text(If we add back the 5 chocolates to the 7 left in)`
`text(the box, there are 12 in the box.)`
`=>\ text(12 is half the chocolates at the start.)`
`:.\ text(24 chocolates were in the box.)`
Lionel's soccer grand final is on the 4th September.
Lionel has a grand final week breakfast 5 days before the grand final.
What day of the week is Lionel's grand final week breakfast?
|
|
`text(Thursday)` |
|
|
`text(Wednesday)` |
|
|
`text(Tuesday)` |
|
|
`text(Monday)` |
|
|
`text(Sunday)` |
`text(Monday)`
`text(1 day before is Friday.)`
`text(2 days before is Thursday.)`
`vdots`
`text(5 days before is Monday.)`
Roger went to a movie at the cinema that started at 10:20 am.
The movie finished 1:32 pm.
How long did the movie take?
|
|
1 hour 52 minutes |
|
|
2 hours 52 minutes |
|
|
3 hours 12 minutes |
|
|
4 hours 12 minutes |
`text(3 hours 12 minutes)`
`text(One strategy:)`
`text(10:20 am plus 3 hours)`
`=1:20\ text(pm)`
`text(1:20 pm plus 12 minutes)`
`=1:32\ text(pm)`
`:.\ text(The move took 3 hours 12 minutes)`
An orientation course is set up with 4 drinking stations.
Runners start and then progress through the course in the order of the drinking stations labelled 1-4 in the diagram below.
At which drinks station do the runners make the greatest change of direction?
| Station 1 | Station 2 | Station 3 | Station 4 |
|
|
|
|
|
`text(Station 2)`
`text(Station 2)`
John wants to find the answer to `2998 + 1567`.
Which of the following shows a way to get the same answer?
|
|
`3000 + 1566` |
|
|
`3000 + 1565` |
|
|
`3004 + 1500` |
|
|
`3004 + 1600` |
`3000 + 1565`
`text(By adding and subtracting 2:)`
| `2998+1567` | `=2998+2+1567-2` |
| `=3000 + 1565` |
Simon is painting a wall at his home grey.
About what fraction of the wall does Simon still have to paint grey?
| `1/4` | `1/6` | `3/4` | `5/6` |
|
|
|
|
|
`1/6`
`text(The unpainted section is around one third)`
`text(of the right half of the wall.)`
`:.\ text(Fraction still to paint)`
`= 1/3 xx 1/2`
`= 1/6`
Tenzing started his trek at 5:30 am.
He arrived at his destination `14 1/2` hours later.
At what time did he arrive at his destination?
| `7:30\ text(pm)` | `8:00\ text(pm)` | `9:30\ text(pm)` | `10:00\ text(pm)` |
|
|
|
|
|
`text(8:00 pm)`
`text(One strategy:)`
| `5:30\ text(am plus)\ 14.5\ text(hours)` | `=\ text(5:30 pm plus)\ 2.5\ text(hours)` |
| `=\ text(8:00 pm)` |
Venus begins with a number.
She doubles it and then subtracts 8 to get an answer of 6.
What number did Venus start with?
| `4` | `7` | `10` | `28` |
|
|
|
|
|
`7`
`text(Testing each number → consider 7:)`
| `2 xx 7` | `=14` |
| `14-8` | `=6\ \ ` |
The goals scored by 4 players in a season of water polo were recorded in the graph below.
Will scored 8 goals in the season.
Sam scored 5 goals.
How many more goals did Bilbo score than Ginili?
`7\ text(more goals)`
Which of these pairs of numbers has a difference of 26?
| `26 and 62` | `38 and 64` | `46 and 62` | `61 and 91` |
|
|
|
|
|
`38 and 64`
`64 – 38 = 26`
`:. 38 and 64`
Rob uses sticks to make a pattern.
He starts with 3 sticks for Design 1.
How many sticks does Rob need for Design 5?
| `39` | `42` | `45` | `48` |
|
|
|
|
|
`45`
`text(One possible strategy:)`
`text(Each new row contains an extra triangle than the row above.)`
`=>\ text(Design 5 will have 5 triangles on the bottom row.)`
| `:.\ text(Total sticks)` | `= 30 + (5 xx 3)` |
| `= 30 + 15` | |
| `= 45` |
Riley had 3 bird cages that each contained 12 birds.
He then bought one more bird cage and spread the birds out evenly between the 4 cages.
How many birds were then in each cage?
| `6` | `9` | `10` | `12` |
|
|
|
|
|
`9`
| `text(Total birds)` | `= 3 xx 12` |
| `= 36` |
`:.\ text(Birds in each of 4 cages)`
`= 36 ÷ 4`
`= 9`
| `13 +` | `+ 12 = 53` |
`28`
`text(Deduct 13 and 12 from both sides:)`
|
|
`=53 -13-12` |
|
|
`=28` |
Sharon bought 6 chocolate bars that cost $1.20 each.
She gave the shopkeeper a $10 note.
How much change should Sharon expect?
| `$2.80` | `$4` | `$7.20` | `$8.80` |
|
|
|
|
|
`$2.80`
`text(C) text(ost of 6 chocolate bars)`
`6 xx $1.20 = $7.20`
| `:.\ text(Sharon’s change)` | `=10.00 – 7.20` |
| `=$2.80` |
Michelle, Lucy, Clare and Steph are sisters.
The years they were born are recorded in the table below.
Who is the second youngest sister?
| `text(Michelle)` | `text(Lucy)` | `text(Clare)` | `text(Steph)` |
|
|
|
|
|
`text(Lucy)`
`text(The order from oldest to youngest is:)`
`text{Clare (1977), Michelle (1978), Lucy (1987), Steph (1988).}`
`:.\ text(Lucy is the second youngest.)`
The second world war finished in 1945.
Approximately how many years ago did it finish?
| `70` | `75` | `80` | `85` |
|
|
|
|
|
`80`
`text(1945 plus 80 years is 2025.)`
`=>\ text(The closest approximation is 80 years.)`
What is the perimeter of the shape below given each square has a side length of 1 cm?
| `text(8 cm)` | `text(18 cm)` | `text(20 cm)` | `text(36 cm)` |
|
|
|
|
|
`text(20 cm)`
`text(Starting at the bottom right corner and)`
`text(moving clockwise:)`
| `text(Perimeter)` | `=5+3+1+2+1+2+1+2+2+1` |
| `=20\ text(cm)` |