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Grade 6 Math Lab: The Physics of Algebra FREE
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Dividing Fractions
Learning Objectives
- Divide fractions and mixed numbers
- Apply "multiply by reciprocal"
- Solve word problems
Key Concepts
Reciprocal
Flip the fraction: reciprocal of a/b is b/a
Keep-Change-Flip
Keep the first, change ÷ to ×, flip the second
Theory
**To divide fractions:** Multiply by the reciprocal.
a/b ÷ c/d = a/b × d/c
**Example:** 3/4 ÷ 2/5 = 3/4 × 5/2 = 15/8 = 1 7/8
Examples
2/3 ÷ 4/5
Solution: 2/3 × 5/4 = 10/12 = 5/6