Study the diagrams. Answer the following.
- What is the mass of the watermelon in kg and g?
- What is the mass of the pomogranate in g?
- What is the mass of the orange in g?
(a)
1 kg = 1000 g
2 kg = 2000 g
Every 1 line of the first weighing scale → 2000 ÷ 20 = 100 g
8
th line of the first weighing scale after 2 kg
= 2000 + 8 x 100
= 2000 + 800
= 2800 g
Mass of the watermelon
= 2800 g
= 2 kg 800 g
(b)
Every 1 line of the second weighing scale → 100 ÷ 10 = 10 g
3
rd line of the second weighing scale after 100 g
= 100 + 3 x 10
= 100 + 30
= 130 g
Mass of the pomogranate = 130 g
(c)
4
th line of the third weighing scale after 100 g
= 100 + 4 x 10
= 100 + 40
= 140 g
Mass of the orange = 140 g
Answer(s): (a) 2 kg 800 g; (b) 130 g; (c) 140 g
