Question

List measurements smallest to largest 7cm 18mm 1m 3 dm

Answer 1

18mm, 7cm, 3dm, 1m............

Answer 2

`18mm<7cm<3dm<1m`

Explanation:

First of all we will convert all unit in m then we will find which quantity is smallest.

We know that

`1cm=10^(-2) m`

therefore,

7cm=
`7* 10^(-2) m`

0r 7cm=0.07m

`1mm=10^(-3) m`

therefore,

`18mm=18* 10^(-3) m`

`18mm=.018m`

`1dm=10^(-1) m`

therefore,

`3dm=3* 10^(-1) m`

`3dm=0.3m`

Therefore it is clear that,

`.018m<.07m<.3m<1m`

It means

`18mm<7cm<3dm<1m`