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Express the following in cm using decimals. (i) 5 mm (ii) 9 mm (iii) 42 mm (iv) 8 cm 9 mm (v) 375 mm |
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Answer» (i) 5 mm 1 mm = \(\frac{1}{10}\) cm = 0.1 cm 5 mm = \(\frac{5}{10}\) = 0.5 cm (ii) 9 mm 1 mm = \(\frac{1}{10}\) cm = 0.1 cm 9 mm = \(\frac{9}{10}\) cm = 0.9 cm (iii) 42 mm 1 mm = \(\frac{1}{10}\) cm = 0.1 cm 42 mm = \(\frac{42}{10}\) cm = 4.2 cm (iv) 8 cm 9 mm 1 mm = \(\frac{1}{10}\) cm = 0.1 cm 8 cm 9 mm = 8 cm + \(\frac{9}{10}\) cm = 8.9 cm (v) 375 mm 1 mm = \(\frac{1}{10}\) cm = 0.1 cm 375 mm = \(\frac{375}{10}\) cm = 37.5 cm |
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