Page 124 - Start Up Mathematics_5

Capacity

Example 17: Add 11 kL 362 L and 18 kL 56 L and express the answer in kilolitres.

Solution: 1 Alternate Method
11 kL 362 L = 1 1 . 3 6 2 kL kL L
18 kL 56 L = + 1 8 . 0 5 6 kL 1
2 9 . 4 1 8 kL 1 1 3 6 2
+ 1 8 0 5 6

2 9 4 1 8

29 kL 418 L = 29.418 kL

Example 18: Subtract 8 L 96 mL from 34 L 105 mL and write the answer in litres.

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Solution: 2 14 0 10 15 Alternate Method
34 L 105 mL = 3 4 . 1 0 5 L L mL
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8 L 96 mL = – 8 . 0 9 6 L 2 14 0 10 15
2 6 . 0 0 9 L 3 4 1 0 5
– 0 8 0 9 6
2 6 0 0 9

26 L 9 mL = 26.009 L

EXERCISE 8.2

1. Add the following metric measures.

(a) m cm (b) g mg (c) kL L
9 6 2 5 2 4 1 7 5 9 1 2 5

+ 8 0 7 + 1 6 0 2 8 + 6 2 4 8

(d) 17 km 60 m and 8 km 46 m (e) 26 m 7 cm and 19 m 15 cm
(f) 4 dam, 7 dam 20 cm and 9 dam 46 cm (g) 17 kg and 18 kg 25 g

(h) 14 hg 90 g and 9 hg 62 g (i) 31 g 4 mg, 9 g and 12 g 73 mg
(j) 62 L 120 mL and 13 L 55 mL (k) 90 dL 45 mL and 92 mL
(l) 7 kL 96 L, 11 kL 110 L and 15 kL (m) 48 hL 136 dL and 19 hL 58 dL

2. Subtract the following metric measures.

(a) 18 m 65 cm from 23 m (b) 7 hm 92 m from 15 hm 7 m
(c) 26 dg 9 mg from 72 dg 40 mg (d) 96 kg 32 g from 108 kg
(e) 19 hL 38 L from 30 hL 12 L (f) 74 L 13 mL from 87 L

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