Q113 of 196 Page 249

A sugar factory has annual sales of 3 billion 720 million kilograms of sugar. Express this number in the standard form.

Annual sales of sugar in sugar factory = 3 billion 720 million kilograms = 3720000 kg


∴ standard form of 3720000 kg = 372 × 10 × 10 × 10 × 10 kg


= 372 × 104 kg


= 3.72 × 104 × 102 kg


Using the law of exponent,


= 3.72 × 106 kg


∴ The number in the standard form is 3.72 × 106 kg


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