Question

Express as metres (m) using decimals:

(i) 15 cm
(ii) 8 cm
(iii) 135 cm
(iv) 3m 65 cm

Answer 1

(i) 15 cm
We know that 100 cm= 1 m.
Therefore, 1 cm = 1/100 m.
15 cm = 15*1/100 m = 15/100 = 0.15m

(ii) 8 cm
We know that 100 cm= 1 m.
Therefore, 1 cm = 1/100 m.
8 cm = 8/100= 0.08m

(iii) 135 cm
We know that 100 cm= 1 m.
Therefore, 1 cm = 1/100 m.
135 cm = 135/100 = 1.35 m

(iv) 3 m 65 cm
We know that 100 cm= 1 m.
Therefore, 1 cm = 1/100 m.
3m 65 cm = 3 + 65/100
= 3.65 m