Common Denominators
Adding
Subtracting
Multiplying
Dividing
100
What is the least common denominator for ¼ and ⅜
What is 8
100
&frac14 + &frac29
What is 17/36
100
&frac58 - &frac25
What is 9/40
100
&frac35 * &frac34
What is 9/20
100
&frac17 divided by 7
What is 1/49
200
What is the least common denominator for ⅖ and ⅜
What is 40
200
23/9 + 5/2
What is 5 1/18
200
21/6 - 7/3
What is &frac76 or 1 1/6
200
Chloe collected 4 times as many bags of cans as her friend. If her friend collected 1⁄6 of a bag, how much did Chloe collect?
What is &frac46
200
&frac18 divided by 7
What is 1/56
300
The first three common denominators for ½ and ¾
What are 4, 8, and 12
300
5 7/8 + 11/4
What is 8 5/8
300
2 &frac19 - &frac76
What is 17/18
300
A musician's hair was originally 3 inches long. She asked her hair dresser to cut 5⁄6 of it off. How many inches did she have cut off?
What is 2 &frac36
300
A pet store had 4 cats to feed. If they only had one-fifth of a bag of cat food and each cat got the same amount, what fraction of the bag would each cat get?
What is 1/20
400
List the first 3 common denominators for ⅜ and ⅚
What are 24, 48, 72
400
Emily walked 5 2⁄6 miles in the morning and another 3 3⁄5 miles in the afternoon. What was the total distance she walked?
What is 8 28/30 or 8 14/15
400
Zoe bought a bamboo plant that was 4 1⁄2 feet high. When she got it home she cut 3 1⁄6 feet off of it. How tall was the plant after she cut it down?
What is 1 &frac26
400
A air freshener used 3 3⁄4 milliliters of perfume. If Wendy wanted to make 3 air freshners, how many milliliters of perfume would she use?
What is 11 &frac14
400
A glass of water was one-eighth of a liter. How many glasses would it take to fill up a 3 liter jug?
What is 24
500
Explain why the least common denominator for ⅚ and ⅛ would not be 48
Something like... 48 is the easiest common denominator, but the least common denominator is 24 because it is the first multiple of 6 and 8.
500
Adam bought a box of fruit that weighed 6 3⁄8 kilograms. If he bought a second box that weighed 7 2⁄5 kilograms, what is the combined weight of both boxes?
What is 13 31/40
500
While exercising Cody travelled 4 2⁄7 kilometers. If he walked 2 3⁄9 kilometers and jogged the rest, how many kilometers did he jog?
What is 1 60/63
500
A bottle of soda had 4 2⁄7 of the daily recommended sugar. If you were to drink 1⁄2 of the bottle, how much of the daily recommend sugar would you have drank?
What is 2 2/14 or 2 1/7
500
An aquarium had 6 tons of fish food. How many months would it take them to use it all if they used one-seventh of a ton each month?
What is 42