How will you make the following multiplication easier by splitting 1009? Choose the most suitable option.
$123 \times 1009$

100 + 9

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1000 + 9

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990 + 12

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900 + 109

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Solution

The correct option is B
1000 + 9

It’s always easier to split the numbers in the powers of ten. So in this case 1009 can be split as (1000 + 9)
The product becomes $(123 \times 1000) + (123 \times 9)$

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Similar questions

{(\frac{100}{9})}^{- 3 / 2}

{(\frac{9}{100})}^{3 / 2}

{(\frac{1}{\frac{100}{9}})}^{3 / 2}

\frac{3}{10} \times \frac{3}{10} \times \frac{3}{10}

\sqrt{\frac{100}{9}} \times \sqrt{\frac{100}{9}} \times \sqrt{\frac{100}{9}}

\frac{1}{1 + x} + \frac{2}{2 + y} + \frac{1009}{z + 1009} = 1

\frac{x}{x + 1} + \frac{y}{y + 2} + \frac{z}{z + 1009}

(8 - 27), (125 - 216), (343 - 512), (1009 - 1331)

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