411 P5.DA.NK.23052627
Level 3
Simon has some black and red balls. The total mass of all his balls is 242 g. He has 5 more red balls than black balls. The average mass of the black balls is 6 g. The average mass of the red balls is 10 g. How many balls does Simon have altogether?
3 m
2 averages Average with unknown quantity Mass Number x value More than or less than Units equations Units table
412 P6.RD.JC.16010136
Level 3
Tank E contained 4 times as many guppies as Tank F. When 10% of the guppies in Tank E and 10% of the guppies in Tank F were transferred to Tank G, Tank G had 120 guppies, which was 20% more guppies than before. How many less guppies were there in Tank F than Tank E in the end?
4 m
Percent to units Percent of different bases More than or less than Times as many Branching Internal transfer Unchanged total All change Units table Decimal units
413 P5.ST.JC.18121175
Level 3
Adam has 300 stickers in 3 colours.
40% of the stickers are blue.
The rest are red and yellow stickers in the ratio 2 : 3.
  1. What percentage of the stickers are yellow?
  2. How many red stickers are there?
3 m
Fraction to units Finding percent Percent of a set Ratio to units Combined repeated identity Remainder concept Units table Units manipulation
414 P6.FR.JO.21042220
Level 3 PSLE
A box contained blue and white beads. At first, the number of blue beads was 13 the number of white beads. After 14 of the blue beads and 58 of the white beads were used, 75 beads were left.
  1. What fraction of the beads were used? Leave your answer in the simplest form.
  2. How many beads were there in the box at first?
3 m
Fraction of a set Fraction to units All change Units table Units manipulation
415 P5.RA.NK.23021760
Level 3
Shiyun, Kimberly and Yoko had jelly beans in the ratio of 8 : 4 : 3. After Shiyun gave 6 jelly beans to Kimberly and Yoko, the three of them had the same number of jelly beans. Find the total number of jelly beans the children had.
4 m
Ratio to units Equal stage after All change Units table
416 P5.DA.NK.23052626
Level 3
Kylie bought some Geography books at $17 each. She also bought an equal number of History books at a different price. The average price of one Geography and one History book was $10. Kylie paid $70 more for the Geography books than the History books.
  1. What was the cost of one History book?
  2. How many Geography books did Kylie buy?
3 m
2 Averages Average with unknown quantity Money Number x value More than or less than Equal stage Units table
417 P6.FR.TL.16010114
Level 3
Vincent had some pastries. 27 of them were tarts. The rest were cookies. He sold 35 of the tarts and 14 cookies. In the end, he had 131 pastries left. How many more tarts than cookies did he sell?
3 m
Fraction to units More than or less than All change Units table Units manipulation
418 P6.DE.JC.17031305
Level 3 PSLE
Jade and Kylie went shopping together with a total amount of $93.90. Jade spent 2 times as much as Kylie. The amount Kylie had left was $11 more than what she had spent. She had 2 times as much money left as Jade.
  1. How much money did Kylie spend?
  2. How much money did Jade have at first?
4 m
D 4 operations Money More than & less than Times as many All change Units table Decimal units
419 P5.RA.JM.17083116
Level 3
The ratio of the number of ducks in Farm A to the number of ducks in Farm B was 5 : 9. There were 48 fewer ducks in Farm A than in Farm B. When 5 ducks escaped from Farm B, the farmer in Farm B bought another 9 ducks. What was the new ratio of the number of ducks in Farm A to the number of ducks in Farm B in the end? Give your answer in the simplest form.
4 m
Finding ratio Ratio to units All change Units table
420 P5.ST.JC.18121176
Level 3
Adam has stickers in 4 colours.
57 of the stickers are blue.
The rest of the stickers are red, yellow and green in the ratio of 1 : 5 : 3.
If there are 40 more yellow stickers than green stickers,
how many blue stickers are there?
3 m
Fraction to units Ratio to units Combined repeated identity Remainder concept Units table Units manipulation

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