Express as metres using decimals.
(a) 15 cm
(b) 6 cm
(c) 2 m 45 cm
(d) 9 m 7 cm
(e) 419 cm

To do:

We have to express the given numbers as meters using decimals.

Solution:

We know that,

$1\ m=100\ cm$

This implies,

$1\ cm=\frac{1}{100}\ m$

Therefore,

(a) $15\ cm=15\times\frac{1}{100}\ m$

$=\frac{15\times1}{100}\ m$

$=0.15\ m$

(b) $6\ cm=6\times\frac{1}{100}\ m$

$=\frac{6\times1}{100}\ m$

$=0.06\ m$

(c) $45\ cm=45\times\frac{1}{100}\ m$

$=\frac{45\times1}{100}\ m$

$=0.45\ m$

This implies,

$2\ m\ 45\ cm=(2+0.45)\ m$

$=2.45\ m$

(d) $7\ cm=7\times\frac{1}{100}\ m$

$=\frac{7\times1}{100}\ m$

$=0.07\ m$

This implies,

$9\ m\ 7\ cm=(9+0.07)\ m$

$=9.07\ m$

(e) $419\ cm=419\times\frac{1}{100}\ m$

$=\frac{419\times1}{100}\ m$

$=4.19\ m$

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Updated on: 10-Oct-2022

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