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# Q.4 Write each of the following as decimals. (a) 20 + 9 + $$\frac{4}{10}$$ + $$\frac{1}{100}$$ (b) 137 + $$\frac{5}{100}$$ (c) $$\frac{7}{10}$$ + $$\frac{6}{100}$$ + $$\frac{4}{1000}$$ (d) 23 + $$\frac{2}{10}$$ + $$\frac{6}{1000}$$ (e) 700 + 20 + 5 + $$\frac{9}{100}$$

(a) 20 + 9 + $$\frac{4}{10}$$ + $$\frac{1}{100}$$
= 29 + 0.4 + 0.01
= 29.41
(b) 137 + $$\frac{5}{100}$$
= 137 + 0.05
= 137.05 (c) $$\frac{7}{10}$$ + $$\frac{6}{100}$$ + $$\frac{4}{1000}$$
= 0.7 + 0.06 + 0.004
=0.764
(d) 23 + $$\frac{2}{10}$$ + $$\frac{6}{1000}$$
= 23 + 0.2 + 0.006
= 23.206
(e) 700 + 20 + 5 + $$\frac{9}{100}$$
= 725 + 0.09
= 725.09
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