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20. *Three parcels weigh 265 g, 419 g and 1 kg 25 g. What is the total weight? Express your answer in kg and g. (4 marks) 265g + 419g + 1025g = 1709g Answer: 1 kg
709 g 21. The difference between 67 cm and 2 m is ______________. (2 marks) 200cm – 67cm = 133cm Answer: 133 cm 22. *The capacity of a water tank is 7 l 545 ml. It contains 4 l 524 ml ofwater. How much more water can it hold? (4 marks) 7545ml – 4524ml = 3021ml Answer: 3L 21ml
23. *Mr Tan sold 38 kg of rambutans on Saturday and 63 kg of rambutans on Sunday. If 1 kg of rambutans cost $1.80, how much less money did he receive on Saturday than on Sunday? (4 marks) 63kg – 38kg = 25kg (more on
Saturday than Sunday) 25
x $1 = $25 25
x 8 = 200 So, 25 x 80 cents
= 2000 cents = $20 $25 + $20 = $45 Answer: $45 The graph below shows the number of empty bottles collected for recycling from Monday to Friday. Study the graph carefully and answer questions 24 and 25.
24. How many more empty bottles were collected on Thursday than on Monday? (2 marks) 300 – 200 = 100 Answer: 100 bottles 25. How many empty bottles were collected for recycling altogether? (2 marks) Answer: 940 bottles 26. *The total mass of a jar of jam and 3 packs of bread is 2 kg 75 g. If the mass of each pack of bread is 475 g, find the mass of the jar of jam. (4 marks)
650g 2075g – 1425g = 650g (jar of jam) |
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