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Numbers System — MATHS STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9MATHSNumbers System1 Mark
Question
Without actual division, find the following rational numbers are terminating decimals. $\frac{13}{80}$
✓

Answer

Denominator of $\frac{13}{80}$ is $80.$
And,
$80 = 2^4 \times 5$
Therefore, $80 $has no other factors than $2$ and $5.$
Thus, $\frac{13}{80}$ is a terminating decimal.

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