multiplying & dividing fractions
TRANSCRIPT
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
Simplifythe fractionif necessary:
6
20
3
10
How to Divide Fractions:
Multiply the firstfraction by thereciprocal of the second fraction.
1
4
5
2
3
3
2
4
5
2 Multiply the numeratorsand denominators:
3
2
4
5
12
10
3Simplify the fractionif 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. butter1/4 tsp. salt1 c. sugar3 egg yolks2 1/4 tsp vanilla1/8 tsp almond extract3 1/2 c. flour1/2 c. jam2/3 c. slivered almonds
Swedish Pepparkakor
3 1/2 c. flour1 tsp. baking soda1 1/2 tsp. ginger1 1/2 tsp. cinnamon1 tsp. cloves1/4 tsp. cardamon1/2 c. butter3/4 c. sugar1 egg ( I'll have to use Egg Beaters.)3/4 c. molasses2 tsp. orange peel
I only want half of this recipe. Give the new amounts for each ingredient.