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Rational Numbers — Maths STD 7 — Question

Maharashtra BoardEnglish MediumSTD 7MathsRational Numbers3 Marks
Question
Select those rational numbers which can be written as a rational number with denominator 4:
$\frac{7}{8},\frac{64}{16},\frac{36}{-12},\frac{-16}{17},\frac{5}{-4},\frac{-140}{28}$
✓

Answer

Given rational numbers that can be written as a rational number with denominator 4 are:
$\frac{7}{8}$ (On multiplying by 2) $=\frac{3.5}{4}$
$\frac{64}{16}$ (On multiplying by 4) $=\frac{16}{4}$
$\frac{36}{-12}$ (On multiplying by 3) $=\frac{12}{-4}=\frac{-12}{4}$
$=\frac{-16}{17}$ Can,t be expressed with a denominator 4.
$\frac{5}{-4}$ (On multiplying by -1) $=\frac{-5}{4}$
$\frac{140}{28}$ (On multiplying by 7) $=\frac{20}{4}$

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