1) The mass of a hamster is 50 g. The mass of a guinea pig is 800 g. Find the total mass of the two animals. a) 850 b) 750 c) 300 2) The mass of a hamster is 50 g. The mass of a guinea pig is 800 g. How much lighter is the guinea pig? a) 850 b) 750 c) 300 3) The mass of an orange is 50g. The mass of an apple is 70 g. How much heavier is the apple? a) 20g b) 120g c) 750g 4) Arthur's mass is 70 kg . Peter's mass is 67 kg. What is the total mass of the two men? a) 3 kg b) 137 kg c) 137 5) Siti's mass is 27 kg. Penny's mass is 41 kg. How much heavier is Penny than Siti? a) 41-27= 14. 14 kg heavier b) 41+27= 68. 68 kg heavier 6) The basketball weights 460g. It is 140 g heavier than a football. What is the mass of the football? a) 460- 160= 300. 300g b) 460 +160 = 620. 620g 7) A packet of cookies weighs 10g. What is the total mass of 5 packets? a) 10 + 5= 15. 15g b) 5 x 10 = 50. 50g c) 10-5 = 5. 5g d) 10 divide 5 = 2. 2g

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