Question:

Find:
(i) 2.5 × 0.3
(ii) 0.1 × 51.7
(iii) 0.2 × 316.8
(iv) 1.3 × 3.1
(v) 0.5 × 0.05
(vi) 11.2 × 0.15
(vii) 1.07 × 0.02
(viii) 10.05 × 1.05
(ix) 101.01 × 0.01
(x) 100.01 × 1.1

Updated On: Jul 21, 2024
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Solution and Explanation

(i) 2.5 × 0.3 = \(\frac{25}{10}\) × \(\frac{3}{10}\) = \(\frac{75}{100}\) = 0.75



(ii) 0.1 × 51.7 = \(\frac{1}{10}\) × \(\frac{517}{10}\) = 5.17



(iii) 0.2 × 316.8 = \(\frac{2}{10}\)× \(\frac{3168}{10}\) = \(\frac{6336}{100}\) = 63.36



(iv) 1.3 × 3.1 = \(\frac{13}{10}\) × \(\frac{31}{10}\) = \(\frac{403}{100}\) = 4.03



(v) 0.5 × 0.05 = \(\frac{5}{10}\) × \(\frac{5}{100}\) = \(\frac{25}{1000}\)= 0.025



(vi) 11.2 × 0.15 = \(\frac{112}{10}\) × \(\frac{15}{100}\) = \(\frac{1680}{1000}\) = 1.680 = 1.68



(vii) 1.07 × 0.02 = \(\frac{107}{100}\) × \(\frac{2}{100}\) = \(\frac{214}{10000}\) = 0.0214



(viii) 10.05 × 1.05 = \(\frac{1005}{100}\) ×\(\frac{105}{100}\) = \(\frac{105525}{10000}\)= 10.5525



(ix) 101.01 × 0.01 = \(\frac{10101}{100}\) × \(\frac{1}{100}\) = \(\frac{10101}{10000}\) = 1.0101



(x)100.01×1.1 = \(\frac{100001}{100}\) × \(\frac{11}{10}\) = \(\frac{110011}{1000}\) = 110.011

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