1. Multiplying Fractions…so far
Multiplying TWO fractions
Multiplying THREE fractions
Multiplying Mixed Numbers
Multiplying by a whole number

2. Remember how to change between mixed numbers and improper fractions?
Let’s see..

3. Multiplying Mixed Numbers
EXAMPLES + + of
(a) x
(b) X X x 3 7 13 4 + + = x X X 12 91 3 17 7 23 = = x 12 7
391 21 7 = = 13 21 18 = 3

4. Fraction by whole number
2 5 × 15 1 3
2×3 1×1
2 5 ×15= = 3 7 ×21= = =6 1 3
3 7 × 21 1
3×3 1×1 =9 1

5. Classwork / Homework
Ex 3b Pg 54: 35,38,42 Ex 3c Pg 55: 16,18,20 Ex 3c Pg 56: 24,28,32

6. Homework
Multiplying 3 fractions  Pg 54 No. 35,38,42

7. Multiplying 3 Fractions
3 10 × 5 9 × 6 7 2 35 1 1 1
= 1×1×1 1×1×7 = 1 7 2 3 1 1

8. Multiplying 3 Fractions
7 11 × 8 9 × 33 28 1 38 1 2 3
= 1×2×1 1×3×1 = 2 3 1 3 4 1

9. Multiplying 3 Fractions
5 14 × × 5 9 1 42 1 1 3
= 1×1×1 2×1×3 = 1 6 2 5 3 1

10. Multiplying mixed numbers Pg 55 No. 16,18,20
Homework
Multiplying mixed numbers Pg 55 No. 16,18,20

11. Multiplying Mixed Numbers16 + x + X X 3 18 3 x 30 7 10 21 = 1 x + 1 + 1 X X 10 1 9 11 2 11 20 = = 1 x 1 10 1 = 9 = = 10 11

12. Multiplying Mixed Numbers20 + x + X X 3 20 33 2 11 40 = 1 x 1 1 60 = = 60 12

13. Multiplying fractions by whole numbers Pg 56 No. 24,28,32
Homework
Multiplying fractions by whole numbers Pg 56 No. 24,28,32

14. 4 1 6 ×9=
2 5 6 ×3=
28 x = 3
25 6 × 9 1 =
75 2 =37 1 2 24 2 1 28
17 2 =8 1 2
17 6 × 3 1 = 2 4 32
44 1 =44
28 1 × 11 7 = 1