1. Copyright©Ed2NetLearning.com 1 DIVIDING FRACTIONS AND FRACTIONS

2. Copyright©Ed2NetLearning.com 2 Previous Knowledge Divide 1.4 ÷ ½ 2.2 ÷ 4 3 3.¾ ÷ 4 4.2 ÷ 1/3 5.4/5 ÷ 2

3. Copyright©Ed2NetLearning.com 3 Objective To divide a fraction by fraction

4. Copyright©Ed2NetLearning.com 4 Divide by a Fraction To divide by a fraction, multiply by its reciprocal. a/b ÷ c/d = a/b x d/c, where b,c and d ≠ 0

5. Copyright©Ed2NetLearning.com 5 Divide by a Fraction Find 1/6 ÷ ¾. 1/6 ÷ ¾ = 1/6 x 4/3 = 1 x 4 6 x 3 = 4 18 = 2 9 Multiply by the reciprocal 4/3 Divide 4 and 18 by the GCF, 2

6. Copyright©Ed2NetLearning.com 6 Divide by a Fraction Find 1/3 ÷ 5/12. 1/3 ÷ 5/12 = 1/3 x 12/5 = 1 x 12 3 x 5 = 4 5 1 4

7. Copyright©Ed2NetLearning.com 7 Practice Problems Divide and write in simplest form 1.1/8 ÷ ½ 2.¼ ÷ 1/8 3.½ ÷ 1/3 4.5/8 ÷ ¼ 5.¾ ÷ 9/16

8. Copyright©Ed2NetLearning.com 8 Word Problems David cemented ¾ of a room. He has used 1 1/8 packs of cement. How much cement will he need to finish the job? ¾ ÷ 9/8 = ¾ x 8/9 = 3 x 8 4 x 9 = 2 3 2 3

9. Copyright©Ed2NetLearning.com 9 Now your turn If the area of the rectangle is 2/15 cm 2 and the length is 8/15 m, find its breadth?

10. Copyright©Ed2NetLearning.com 10 Review To divide by a fraction, multiply by its reciprocal.

11. Copyright©Ed2NetLearning.com 11 Assessment Divide the following and write in simplest forms: 1.2/3 ÷ 1/5 2.2/3 ÷ 1/6 3.3/8 ÷ ¾ 4.5/6 ÷ 2/3 5.4/7 ÷ 3/7 6.4/9 ÷ 2/7 7.7/8 ÷ 3/8 8.7/8 ÷ 2/5 9.4/7 ÷ 8/9 10.2/3 ÷ 2/5

12. Copyright©Ed2NetLearning.com 12 Great Job!