Page 63 - BUSINESS MATHEMATICS MODULE 1 (WHOLE)_revised 10.20.2020

Lesson 4.D: OPERATTIONS WITH FRACTIONS

Multiplying and Dividing with Fractions

• Multiplying a Fraction by a Fraction

To multiply two fractions, just multiply the numerators to get the numerator of the

product, and multiply the denominators to get the denominator of the product.

×
× =
×

5
Example 1: 4 × = 4×5 =
3 7 3×7
• Multiplying a Fraction by an Integer

To multiply a fraction by a whole number, remember that any integer can be

written as the fraction .
1

6
Example 1: 6 × 3 = × 3 = 6×3 =
13 1 13 1×13
• Dividing by a Fraction M1_L3

To divide by a fraction, multiply by the reciprocal of the fraction.

5
4
2
Example 1: 2 ÷ = × = 2×5 = 10 , reducing to lowest term 10÷2 =
3 5 3 4 3×4 12 12÷2

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