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# Q.6 Express the following as cm using decimals. (a) 2 mm (b) 30 mm (c) 116 mm (d) 4 cm 2 mm (e) 162 mm (f) 83 mm

We know that 10 mm = 1 cm.
$$\therefore$$ 1mm = $$\frac{1}{10}$$ cm
(a) 2 mm = 2 × $$\frac{1}{10}$$ cm = $$\frac{2}{10}$$ cm = 0.2 cm

(b) 30 mm = 30 × $$\frac{1}{10}$$ cm = 3cm

(c) 116 mm =116 × $$\frac{1}{10}$$ cm = $$\frac{116}{10}$$ cm = 11.6 cm

(d) 4 cm 2 mm = 4 cm+ 2× $$\frac{1}{10}$$ cm = 4 + 0.2 = 4.2 cm

(e) 162 mm = 162 × $$\frac{1}{10}$$ cm = $$\frac{162}{10}$$ cm = 16.2

(f) 83 mm = 83 × $$\frac{1}{10}$$ cm = $$\frac{83}{10}$$ cm = 8.3 cm
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