Common Denominators
What number could be a common denominator for these two fractions?
1/9 and 1/3?
a. 3
b. 12
c. 18
d. 21
c. 18
8/9 - 1/3 =
5/9
2/3 + 1/2 =
7/6
What is 1/3 of 24?
8
What must you have to add and subtract fractions?
a. common numerators
b. different numerators
c. common denominators
d. different denominators
c. common denominators
What number could be a common denominator for these two fractions?
1/5 and 5/6?
a. 30
b. 6
c. 11
d. 5
a. 30
2/3 - 3/8 =
7/24
What is the sum of 1/2 + 1/3 + 1/6?
1
A teacher has 20 ounces of water in her water bottle. She drank 1/5 of the water. How many ounces did she drink?
4
9/6 OR 1 3/6 OR 1 1/2
What number could be a common denominator for these two fractions?
2/3 and 3/4
a. 3
b. 7
c. 4
d. 12
d. 12
6/7 - 4/5 =
2/35
2/6 + 2/8 =
7/12
What is 1/2 of 7?
7/2 OR 3 1/2
Melanie is helping her dad paint her house. They mixed 5/9 gallons of white paint and 1/6 gallons of blue paint. How many gallons was the mixture in all?
13/18 gallons
What number could be a common denominator for these two fractions?
2/3 and 1/6?
a. 9
b. 3
c. 6
d. 11
c. 6
11/12 - 3/4 =
1/6
4/8 + 1/3 =
5/6
Jenna has 60 yards of yarn. She used 1/10 of it for a knitting project. How much yarn did she use?
6 yards
The penguin nursery is open two times a day: 2/3 hour at noon and 5/12 hour in the afternoon. How much time is the penguin nursery open every day?
13/12 OR 1 1/12
Which of these numbers could NOT be a common denominator for these three fractions?
1/3 and 2/5 and 3/10
a. 15
b. 30
c. 60
d. 90
a. 15
Subtract and simplify
2/4 - 3/8 =
1/8
2/7 + 1/4 =
15/28
Janie made 3 quarts of lemonade. She drank 1/7 of the lemonade each day. How much lemonade did she drink each day?
3/7 quarts
Two kinds of fish can be found in a small tank. The blue fish is 2/15 feet long and the orange fish is 7/10 feet long. How much longer is the orange fish
17/30