1201 P5.ST.JC.18121177
Level 3
In a school, there is a total of 400 people.
30% are adults.
The rest are children.
The number of boys and girls is in the ratio of 2 : 5.
  1. What percentage of the people are boys?
  2. How many girls are there?
3 m
Ratio to units Finding percent Percent of a set Percent to units Combined repeated identity Remainder concept Units table
1202 P5.RA.NK.22122919
Level 3
Last Saturday, Jack withdrew an equal number of $10-notes and $50-notes from the bank. After spending 58 pieces of $10-notes and 10 pieces of $50-notes, the ratio of the remaining $10-notes to $50-notes became 2 : 5.
  1. How many $10-notes had he left?
  2. What was the total value of the notes which Jack withdrew from the bank?
4 m
Ratio to units Money Equal stage before All change Sets Units equations Units table
1203 P6.RD.TL.16010126
Level 3
Queenie baked 390 cookies and cupcakes. After she gave 0.3 of the cookies and 0.4 of the cupcakes to her friends, she was left with an equal number of cookies and cupcakes. How many cookies had she left?
4 m
Decimal to units Equal stage after All change Units table Units manipulation
1204 P4.WN.JM.17102314
Level 2
Ken has some marbles. He has twice as many marbles as his brother. Given that they have 816 marbles altogether, how many marbles does his brother have?
2 m
Model Times-as-many Units method
1205 P4.AN.NK.23041231
Level 3
The figure is made up of a square ABCD and a rectangle DEFG. ∠CDG = 69°. ∠x is twice of ∠y. Find ∠x.
3 m
Right angle Square Rectangle Overlapping angles Model Times-as-many Units method

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