Page 202 - SK Year 5 Mathematics DLP

3 6 042 g – 1.07 kg – 980 g = kg
Convert unit of g to kg Subtracting consecutively

6 042 g = (6 042 ÷ 1 000) kg 9 18
5 1014 3 8 17
= 6.042 kg 6 .0 4 2 kg 4 .9 7 2 kg
– 1 .0 7 0 kg – 0 .9 8 0 kg
980 g = (980 ÷ 1 000) kg 4 .9 7 2 kg 3 .9 9 2 kg

= 0.980 kg

6 042 g – 1.07 kg – 980 g = 3.992 kg

4
4 10 kg – 1 503 g – 3.96 kg = g
5

Convert unit of kg to g Subtracting consecutively

4 4 1 0 8 0 0 g
10 kg = 10 kg + kg
5 5 4 200 – 1 5 0 3 g
= (10 × 1 000) g + ( × 1 000) g g
5
1 – 3 9 6 0 g
= 10 000 g + 800 g
g
= 10 800 g

3.96 kg = (3.96 × 1 000) g 1 p
= 3 960 g 1 kg – 800 g = kg
q
5
Find values of p and q.

1 Calculate.
3
a 7.1 kg – 2.54 kg = kg b kg – 0.69 kg = g
7 4
c 5 120 g – 1 kg – 2.093 kg = kg
10
1
d 10 kg – 4 860 g – 3.72 kg = g
2
1
2 a Calculate the difference between 38.92 kg and 60 kg.
5
b How much more is 13.051 kg than 7 360 g?
2
c Subtract 5 kg from 9.018 kg. State the answer in g.
5

• Carry out a question and answer session involving subtraction of mass
194 using words such as calculate the balance, find the difference, and how
5.2.3 much more is a particular mass from another mass.