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Types of Fractions

Question

What does $0.9 cm$ mean? It is the same as __________ $mm .$ We can also say this is nine-tenths of a $cm .$ Right?

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Solution

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As the last statement of the question suggests $0.9 cm$ is nine-tenth of a centimeter.

$1 cm = 10 mm$
So,
$0.9 cm = 0.9 \times 10 mm$
$= 9 mm$

So, $0.9 cm$ is same as $9 mm .$

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