Agenda Wednesday, Dec. 1
5.4 Multiplying & Dividing Fractions
Homework Check
Homework 9 p. 255 # 2 - 20 evens,13, 24, 26, 38, 55
Quiz Friday Ch. 5-1 - 5-4
How to Multiply Fractions:
Multiply the
numerators:
1 2
5 4
3 6
2
5
2
4
3 6
20
Multiply the
denominators:
3
Simplify
the fraction
if necessary:
6
20
3
10
How to Divide Fractions:
Multiply the first
fraction by the
reciprocal of the
second fraction.
1
4
5
2
3
3
2
4
5
2 Multiply the numerators
and denominators:
3
2
4
5
12
10
3
Simplify the fraction
if necessary:
12
10
1
5
1
I am baking cookies for our Christmas holiday. I need to triple the batch. How
many of each ingredient do I need?
Huszarcsok
1 1/2 c. butter
1/4 tsp. salt
1 c. sugar
3 egg yolks
2 1/4 tsp vanilla
1/8 tsp almond extract
3 1/2 c. flour
1/2 c. jam
2/3 c. slivered almonds
Swedish Pepparkakor
3 1/2 c. flour
1 tsp. baking soda
1 1/2 tsp. ginger
1 1/2 tsp. cinnamon
1 tsp. cloves
1/4 tsp. cardamon
1/2 c. butter
3/4 c. sugar
1 egg ( I'll have to use Egg Beaters.)
3/4 c. molasses
2 tsp. orange peel
I only want half of this recipe.
Give the new amounts for each ingredient.

Multiplying & dividing fractions

  • 1.
    Agenda Wednesday, Dec.1 5.4 Multiplying & Dividing Fractions Homework Check Homework 9 p. 255 # 2 - 20 evens,13, 24, 26, 38, 55 Quiz Friday Ch. 5-1 - 5-4
  • 3.
    How to MultiplyFractions: Multiply the numerators: 1 2 5 4 3 6 2 5 2 4 3 6 20 Multiply the denominators: 3 Simplify the fraction if necessary: 6 20 3 10
  • 8.
    How to DivideFractions: Multiply the first fraction by the reciprocal of the second fraction. 1 4 5 2 3 3 2 4 5 2 Multiply the numerators and denominators: 3 2 4 5 12 10 3 Simplify the fraction if necessary: 12 10 1 5 1
  • 14.
    I am bakingcookies for our Christmas holiday. I need to triple the batch. How many of each ingredient do I need? Huszarcsok 1 1/2 c. butter 1/4 tsp. salt 1 c. sugar 3 egg yolks 2 1/4 tsp vanilla 1/8 tsp almond extract 3 1/2 c. flour 1/2 c. jam 2/3 c. slivered almonds
  • 15.
    Swedish Pepparkakor 3 1/2c. flour 1 tsp. baking soda 1 1/2 tsp. ginger 1 1/2 tsp. cinnamon 1 tsp. cloves 1/4 tsp. cardamon 1/2 c. butter 3/4 c. sugar 1 egg ( I'll have to use Egg Beaters.) 3/4 c. molasses 2 tsp. orange peel I only want half of this recipe. Give the new amounts for each ingredient.