Question

Make the following conversion. 275 mm = _____ cm

Answer 1

10mm=1cm So.......... 275 mm=27.5 cm

Answer 2

Answer:

275mm=27.5cm

Explanation:

We know that 1 centimeter is equal to 10 millimeters (1cm=10mm). As they are the same, dividing one by the other, results in 1:

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

If we multiply something by 1, it's not affected. We will multiply 275mm by 1 (or 1cm/10mm) in order to get the same quantity, but with different units:

$275mm=275mm*\frac{1cm}{10mm}=27.5cm$