Presentation is loading. Please wait.

Presentation is loading. Please wait.

Dividing Fractions. Division Review 12 ÷ 5 How many times can 5 go into 12?

Similar presentations


Presentation on theme: "Dividing Fractions. Division Review 12 ÷ 5 How many times can 5 go into 12?"— Presentation transcript:

1 Dividing Fractions

2 Division Review

3 12 ÷ 5 How many times can 5 go into 12?

4 14 ÷ ¾ = How many times can ¾ go into 14?

5 Problem 4.1 A Naylah plans to make small cheese pizzas to sell at a school fundraiser. She has nine bars of cheese. How many pizzas can she make if each pizza needs the given amount of cheese?

6 Problem 4.1 B

7 Do you see a pattern??? 9 ÷ 1/3 = 27 9 ÷ 1/4 = 36 9 ÷ 1/5 = 45 9 ÷ 1/6 = 54 9 ÷ 1/7 = 63 9 ÷ 1/8 = 72 9 ÷ 1/3 = 27 9 ÷ 2/3 = 13 1/2 9 ÷ 3/3 = 9 9 ÷ 4/3 = 6 3/4

8 Whole #s ÷ Fraction Whole # ÷ Numerator, x Denominator Whole # x Denominator, ÷ Numerator Denominator ÷ Numerator, x Whole #

9 4.1 Review I have 5 cups of flour at home and want to make muffins. How many muffins can be made if each takes 3/5 cup of flour? ▫Draw a model to represent the problem ▫Solve When dividing any whole number by any fraction, you…

10 4.2 Dividing a Fraction by a Whole # Draw a picture to represent the problem. Ms. Li brings peanuts to be shared equally by members of groups winning each game. How much of a pound of peanuts will each student get in the given situations? 1.Four students share ½ pounds of peanuts

11 2.Three students share ¼ pound of peanuts 3.Two students share 1/5 pound of peanuts

12 Steps to Dividing Fractions Re-write any _________ as a _________ Re-write any _______ _______ as an ________ fraction Keep the 1 st number the ________ Change from ________ to _________ Re-write the 2 nd number as it’s ___________ (_____) Solve

13 Steps to Dividing Fractions Re-write any whole # as a fraction Re-write any mixed # as an improper fraction Keep the 1 st number the same Change from ÷ to x Re-write the 2 nd number as it’s reciprocal (flip) Solve

14

15 Skill wkst. - Front

16 Wednesday 1/27/10 Find the reciprocal of each number. 1.¾ 2.11/12 3.1/8 4.4 ½ 5.35

17 Skill wkst. - Back


Download ppt "Dividing Fractions. Division Review 12 ÷ 5 How many times can 5 go into 12?"

Similar presentations


Ads by Google