How will you write 7cm 5 mm in ‘cm’ using decimals? 

Answers (1)

As we know,

1 cm = 10 mm 

1mm=\frac{1}{10}cm

So,

7cm 5 mm :

=7 + 5\times\frac{1}{10}=7+\frac{5}{10}=7+0.5=7.5cm.

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