I Find the product of -4-5 and -5-12-

Given, 4/5 and 5/12 ∴ Product of rational numbers = Product of numerators/Product of denominators = ( 4)× ( 5)/5 × 12 = 20/60 = 20 ÷ 20/60 ÷ 20 = 1/3 ...

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Standard VII

Mathematics

Multiplication and Division of Rational Numbers

i Find the pr...

Question

Question 80 (i)

Find the product of $\frac{- 4}{5}$ and $\frac{- 5}{12}$ .

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Solution

Given, $\frac{- 4}{5} a n d \frac{- 5}{12} ∴ P r o d u c t o f r a t i o n a l n u m b e r s = \frac{P r o d u c t o f n u m e r a t o r s}{P r o d u c t o f d e n o m i n a t o r s} = \frac{(- 4) \times (- 5)}{5 \times 12} = \frac{20}{60} = \frac{20 \div 20}{60 \div 20} = \frac{1}{3}$

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Multiplication and Division of Rational Numbers

Standard VII Mathematics

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Question 80 (i) Find the product of −45 and −512.

Given, −45and−512∴Product of rational numbers=Product of numeratorsProduct of denominators=(−4)×(−5)5×12=2060=20÷2060÷20=13

Question 80 (i)

Find the product of $\frac{- 4}{5}$ and $\frac{- 5}{12}$ .

Given, $\frac{- 4}{5} a n d \frac{- 5}{12} ∴ P r o d u c t o f r a t i o n a l n u m b e r s = \frac{P r o d u c t o f n u m e r a t o r s}{P r o d u c t o f d e n o m i n a t o r s} = \frac{(- 4) \times (- 5)}{5 \times 12} = \frac{20}{60} = \frac{20 \div 20}{60 \div 20} = \frac{1}{3}$