Question

14.73 times 0.75
Explain how Brian placed the decimal point correctly in his product.

Answer 1

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★ By estimation, 3.9 turns into 4 and 5.3 turns into 5. The answer after estimation is 20 while the real answer is 20.67.

Answer 2

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• Evaluate 14.73 * 0.75

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$\sf 14.73 \times 0.75$

$\sf = \frac{1473}{100} \times \frac{75}{100}$

$\sf = \frac{1473}{100} \times \frac{3}{4}$

$\sf = \frac{4419}{100} \times \frac{1}{4}$

$\sf = 44.19 \times \frac{1}{4}$

$\sf = 11.0475$

Hence, the required answer is 11.0475 or approximately 11.