51 P4.DE.JM.171010137
Level 3
At a book shop, Alice paid $12 for 1 book and 2 pens. The book cost $6 more than the total cost of all the pens.
  1. How much did 1 pen cost?
  2. How much did 1 book cost?
4 m
D 4 operations Money Model Comparison Units method
52 P4.DE.JM.171010143
Level 3
At a book shop, Alice paid $12 for 1 book and 2 pens. The book costs $6 less than the total cost of all the pens.
  1. How much did 1 book cost?
  2. How much did 1 pen cost?
4 m
D 4 operations Money Model Comparison Units method
53 P4.DE.JM.171010120
Level 3
Mrs Decruz baked 8 muffins more than cakes. Each muffin needed 0.06 kg of flour while each cake needed 0.5 kg of flour. She used 1.72 kg more flour for the cakes than for the muffins. How many muffins did Mrs Decruz bake?
4 m
D 4 operations Mass Model Comparison Number x value Units table
54 P4.DE.JM.171010127
Level 3
Tank A has thrice as much water as Tank B. If Gilbert adds 0.5 ℓ of water to Tank A and 1.8 ℓ of water to Tank B, both tanks will have the same volume of water. Find the volume of water in Tank A at first.
4 m
D 4 operations Volume Equal stage after Volume Model Times-as-many Units equations Units table
55 P4.DE.JC.17100397
Level 3
A carton packed with 1 packet of rice weighs 5.62 kg. The same carton when packed with 4 such packets of rice weighs 21.43 kg.
  1. Find the mass of 1 packet of rice in kg.
  2. Find the mass of the empty carton in kg.
4 m
D 4 operations Mass Repeated identity Units & parts Elimination

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