Multiplying Fractions
What is
1/3 xx 4/5
4/15
There was 5/8 of a pie left in the fridge. Daniel ate 1/4 of the leftover pie. How much of a pie did he have?
5/32
What is
1/3 -: 3
1/9
There is 1/2 of a pizza in the fridge. If you want to split it between 3 people how much of the pizza does each person get?
1/6
What is
1/5 of 3/4
3/20
What is
2/5 xx 3/2
6/10
There are 5/8 kilograms of salt in the kitchen. Mrs. Jackson used 2/3 of the salt when she was preparing dinner. How much salt did she use?
10/24
What is
3 -: 1/5
15
There are 5 pounds of jolly ranchers in a container. If each jolly rancher weighs 1/30 of a pound how many jolly ranchers are in the container?
150
What is the area of a park thats is 3 1/3 miles long and 2/3 miles wide.
20/9 or 2 2/9
What is
10 xx 4/5
40/5 or 8
Kathy is making 3 batches of pancakes for a brunch party. If each batch needs 7 /12 cups of milk, how much milk does she need in total?
21/12 or 1 9/12 or 1 3/4
What is
1/10 -: 9
1/90
Sean and his sister Betty, mow 8/9 of the total area of their lawn. If they divide the chore equally, what fraction of the total lawn does each person mow?
8/18 of the total lawn
Shane has 21 meters of yellow ribbon and 42 meters of lace. For hat-making, she wants to cut the yellow ribbon into smaller pieces measuring 1/7 meters each. How many smaller ribbons will she have?
147 ribbons
1 2/7 xx 1/2
9/14
Pam baked some cupcakes for her friends. She baked 24 cupcakes. Each cupcake is 2/15 pound. If she packed 6 cupcakes in each box, what is the weight of each box?
12/15 pounds
What is
3-: 1/7
21
A baker is making croissants. He has 12 pounds of dough. Each croissant is made from 1/8 pounds of dough. How many croissants can he make?
96 croissants
Scarlett usually rides her bike from the library to school. The distance between the library and school is 7/8 mile. Yesterday the bike had a problem and Scarlett only rode her bike 2/3 of the way from school to the library and walked the rest of the way. How far did she ride her bike?
14/24
Explain why when you multiply any number by a fractions the answer is less than the original number?
Example: Why does
3 xx 1/4= 3/4
Patrick decided to run every day to keep himself healthy. He ended up running 3/5 of a kilometer every day. How much did he run in a week?
21/5 or 4 1/5
Why when you divide by a fraction does your answer become greater than the dividend and divisor?
Example
4 -: 1/3 = 12
You are trying to find how many tiny parts there are in a big number. Which is why the answer becomes greater.
Jane eats 2/3 of a cup of cereal for breakfast every day. If the box contains a total of 24 cups, how many days will it take to finish the box?
72/2 days or 36 days
There are 6/7 of an ounce of pepper in the shaker. If Otis needs to use an equal amount of the pepper for 3 recipes, how much can he use for each?
6/21 ounce