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Metre

We cannot measure the length of a wall with the help of cm. So, we use metre to
measure longer lengths. In short, we write metre as m.

If we put 10 strips each of 10 cm length together, we make one metre.

10 cm 10 cm 10 cm 10 cm 10 cm 10 cm 10 cm 10 cm 10 cm 10 cm

So, 10 × 10 cm, that is, 100 cm = 1 m or 1 m = 100 cm.

2 m

1 m

About 1 m About 1 m About 11 m

Think and Answer
Which unit (m or cm) will you use to measure the following?

1. Length of a 2. Height of a boy 3. Length of a shoe 4. Height of a
toothbrush lace building

Practice Time 9A

1. Measure the lengths of the given strips by using a ruler and write them.

(a) cm

(b) cm

(c) cm

(d) cm

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