36 P2.ST.JC.18120758
Level 2
A + B = 30
A + B + B = 50

  1. Find B.
  2. Find A.
4 m
W Addition & subtraction Repeated identity Units & parts Substitution
37 P6.RA.JC.17072201
Level 2 PSLE
The pupils in a class are divided equally into Team A and Team B. The ratio of the number of boys to the number of girls in Team A is 2 : 1 and in Team B, it is 4: 11. What is the ratio of the number of boys to the number of girls in a class?
2 m
Finding ratio Ratio to units Equal stage Combined repeated identity Units table Units manipulation
38 P2.ST.JC.18120759
Level 3
A + B = 50 - 20
A + B + B = 10 + 40

  1. Find B.
  2. Find A.
4 m
W Addition & subtraction Repeated identity Units & parts Substitution
39 P2.ST.JC.18120760
Level 2
A + B = 30
B + B = 20

  1. Find B.
  2. Find A.
4 m
W 4 operations Repeated identity Units & parts
40 P6.RA.JC.17072202
Level 2 PSLE
A rope was first cut into two pieces in the ratio 3 : 2. The longer piece was then cut into two pieces in the ratio 3 : 1. Among the three pieces, the length of the shortest piece was 6 cm. What was the length of the rope before it was first cut?
2 m
Ratio to units Length Combined repeated identity Remainder concept Units table

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