100
UNIT 8
Subtraction involving mass
Example: Work out the following.
(i). 168 g - 52 g
(ii). 4 kg 450 g - 1 kg 600 g
7. Work out the following.
(a) 105 g - 75 g (b) 6 kg 644 g - 4 kg 320 g (c) 7 kg 168 g - 3 kg 234 g
Let’s work out
kg g
4 450
1 600
2 850
3
-
1000g
(a) 5 kg 850 g
2 kg 123 g
-
(c) 4 kg 125 g
2 kg 270 g
-
(b) 7 kg 460 g
4 kg 370 g
-
168 g
52 g
116 g
-
4 kg 450 g
1 kg 600 g
2 kg 850 g
-
6. Work out.
31000g