Question

Express the following as cm using decimal:
2 mm
​

Answer 1

1 cm =10 mm

Therefore, 2mm=2/10=0.2 cm

Answer 2

$∴10mm \: = 1cm \\ ∴1mm = \frac{1}{10} cm \\ ∴2mm = \frac{1}{10} \times 2mm \\ \: \: \: \: \: \: = \frac{2}{10}cm$

Տօ, αղsաҽɾ ís 0.2 cм