1. Ms Sadler’s golf league has 48 members
Ms Sadler’s golf league has 48 members. If the league splits into teams of 12 members each, how many equally sized teams will there be?
Friday, 9/14/12

2. Fraction Multiplication
And Cancelation

3. Fraction Multiplication
Here are some fraction multiplication problems
Can you tell how to multiply fraction from these examples?

4. 4 3 x 5 Multiplication Multiply numerator by numerator
And denominator by denominator 3 5 x 4

5. Try some.
Multiply the following:

6. Answers Multiply the following:
Multiply the following:

7. Multiplying Mixed Numbers
Because of the order of operations,
Mixed numbers cannot be multiplied as is
Change mixed numbers to improper fractions, then multiply.

8. Try some Change any whole or mixed numbers to improper.
Change any whole or mixed numbers to improper.
Multiply straight across.
Simplify answers

9. Answers Change any whole or mixed numbers to improper.
Multiply straight across.
Simplify answers

10. Reduce before you multiply
Cancelling
Reduce before you multiply

11. To cancel before multiplying:
Reduce by finding the GCF
diagonally 5 24 10 15 x

12. 3 4 5 6 x

13. Independent Practice On Notebook Paper
Page 263 (Lesson 7-2)
#13-18
Page 267 (Lesson 7-3)
#11-14
Early Finishers
Page 236, 19-24
Page 267, 15-22

14. Cancelling when Multiplying Fractions
Reduce the numbers diagonally
What is the GCF of those two numbers?
Multiply across
Simplify
25 x 12
32 35

15. Canceling Reducing before multiplying is called canceling.
Instead think the following in your head.

16. Canceling on paper
Rules: One factor from any numerator cancels with like factor from the denominator.

17. Try one Say “--- goes into ____ this many times.”
As you cross each number out and write what is left after canceling above the number.

18. Answer Say “--- goes into ____ this many times.”
As you cross each number out and write what is left after canceling above the number.

19. Try one more Make whole and mixed numbers improper Cancel if you can
Multiply Numerators and denominators straight across.
Simplify

20. Answer Make whole and mixed numbers improper Cancel if you can
Multiply Numerators and denominators straight across.
Simplify