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# How to convert cm to mm?

2.3cm to mm? show steps plz

### 6 Answers

- Ellen NLv 41 decade agoFavorite Answer
10mm = 1 cm

x cm(10mm/1cm) = your answer in mm

it's easier to see if you write what's in parentheses on 2 lines so it's 10mm over 1 cm (keep 'x cm' on top line)

you can do all unit conversions like this by putting your new unit in the numerator of the fraction and the old unit in the denominator.. this works because the fraction or converter is essentially 1

- 1 decade ago
Ellen is right, 1cm=10mm and do the conversion by making a fraction out of that fact (divide both sides by 1cm)

1 = (10mm/1cm) - keep the units you want on top and the ones you want to get rid of on the bottom.

Do the conversion:

2.3cm(10mm/1cm)=23mm. The cm cancel out and you are left with mm.

- 1 decade ago
because 10 mm is equal to 1 cm , you would have to times the cm by 10 to convert it to mm

2.3 multiplied by 10 is equal to 23

- Anonymous1 decade ago
cm *10 =mm

2.3cm *10 = 23mm

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