1. Copyright(c)Ed2NetLearning. Inc 1 Chapter – 6 Lesson 43 Multiplying Fractions and Fractions

2. Copyright(c)Ed2NetLearning. Inc 2 Objectives To multiply fractions

3. Copyright(c)Ed2NetLearning. Inc 3 Previous Knowledge Find the GCF of the following: 1.24, 32 2.15, 45 3.39, 78 4.108, 72 5.600, 320

4. Copyright(c)Ed2NetLearning. Inc 4 Multiplying Fractions To multiply fractions, multiply the numerators and multiply the denominators. Example: Arithmetic 2/5 x ½ = 2 x 1 = 2/10 5 x 2 Algebra : a x c =a x c b d b x d

5. Copyright(c)Ed2NetLearning. Inc 5 Example - Multiply Fractions Find 1/3 x ¼ 1/3 x ¼ = 1 x 1 3 x 4 =1 12 Multiply the numerators Multiply the denominators Simplify

6. Copyright(c)Ed2NetLearning. Inc 6 Practice Problems Multiply and write in simplest form: 1.½ x ¾ 2.1/3 x 2/3 3.¼ x ¾ 4.1/3 x 3/8 5.2/3 x 4/9 6.5/6 x 5/8

7. Copyright(c)Ed2NetLearning. Inc 7

8. 8 Simplify before Multiplying If the numerator and denominator have a common factor, we can simplify before we multiply.

9. Copyright(c)Ed2NetLearning. Inc 9 Example – Simplify before multiplying Find 1/3 x ¾ 1 x ¾ 3 =¼=¼ 1 1 The numerator 3 and the denominator 3 have common factor 3 Divide both the numerator and denominator by 3

10. Copyright(c)Ed2NetLearning. Inc 10 EXAMPLE – 2 Find ¾ x 4/9 ¾ x 4/9=3 x 4 4 9 =1=1 3 1 1 1 3

11. Copyright(c)Ed2NetLearning. Inc 11 Practice Problems Multiply and write in its simplest form: 1.3 x 45 5 27 2.5 x 16 8 17 3.6 x 44 11 45 4. 7 x 1 13 56 5.4 x 28 7 36

12. Copyright(c)Ed2NetLearning. Inc 12 Let’s Play http://www.thekidzpage.com/freekids games/games/bounce/kids-games- eggscramblers.htmlhttp://www.thekidzpage.com/freekids games/games/bounce/kids-games- eggscramblers.html

13. Copyright(c)Ed2NetLearning. Inc 13 Word Problems 3/8 of the school campus is used for class rooms and 2/5 of the campus is used for games fields. How much space is used? 3/8 x 2/5=3/20 of school space

14. Copyright(c)Ed2NetLearning. Inc 14 Now your Turn There was 1/5 of a tin of yellow paint and ¼ of a tin of green paint left over after painting my room. How much paint was left over?

15. Copyright(c)Ed2NetLearning. Inc 15 Review To multiply fractions, multiply the numerators and multiply the denominators.

16. Copyright(c)Ed2NetLearning. Inc 16 Assessment Sheet Multiply. 1.3/8 x 2/3 2.5/4 x 8/7 3.4/5 x 5/7 4.4/15 x 3/20 5.4/7 x 21/28 6.2/3 x ½ 7.½ x ½ 8.4/5 x 5/3 9.¾ x 4/5 10.6/15 x 3/5

17. Copyright(c)Ed2NetLearning. Inc 17 That’s all for today Go through the chapter and try to do the assessment sheet