Question

Express as cm using decimals.
5 mm
60 mm
164 mm
9 cm 8 mm
93 mm

Answer 1

(a) ∵ 1 mm = $\frac{1}{10}$ cm
∴ 5 mm = $\frac{1}{10}$ x 5 = 0.5 cm

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(b) ∵ 1 mm = $\frac{1}{10}$ cm
∴ 60 mm = $\frac{1}{10}$ x 60 = 6 cm

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(c) ∵ 1 mm = $\frac{1}{10}$ cm
∴ 164 mm = $\frac{1}{10}$ x 164 = 16.4 cm

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(d) ∵ 1 mm = $\frac{1}{10}$ cm
∴ 9cm 8mm = 9+$\frac{1}{10}$x 8 = 9+0.8 =9.8 cm

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(e) ∵ 1 mm = $\frac{1}{10}$ cm
∴ 93 mm = $\frac{1}{10}$ x 93 = 9.3 cm