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Multiplication and Division of Rational Numbers

ii Simplify :...

Question

Question 82 (ii)

Simplify : $1 \div (- \frac{1}{2})$

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Solution

$1 \div (- \frac{1}{2})$
Reciprocal of $(- \frac{1}{2}) = \frac{2}{- 1}$
So, $1 \div (- \frac{1}{2}) = \frac{1}{1} \times \frac{2}{- 1} = \frac{1 \times 2}{1 \times (- 1)} = \frac{2}{- 1} = \frac{- 2}{1} = - 2$

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Question 3 (ii)
Simplify:

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Multiplication and Division of Rational Numbers

Standard VII Mathematics

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