Vocabulary
What is the top number of a fraction called?
Numerator
3/8 + 4/8
7/8
9/10 - 7/10
2/10
Sally ate 1/8 of a cake and her sister ate 3/8 of it. What fraction of the cake did they eat altogether?
4/8
What is the bottom number of a fraction called?
Denominator
1/12 +5/12
6/12
8/10- 5/10
3/10
Mary has 3/4 cups of orange juice. She pours out 2/4 cups of the juice down the sink. How much does she have left?
1/4
When fractions have the same bottom number, we say they have a ________ ___________.
common denominator
2/9 + 5/9
7/9
3/4- 1/4
2/4
Mrs. Kaufman ordered a pizza and ate 3/10 of it. Then she went to recess and ate 4/10 of it. How much of the pizza did she eat?
7/10
When fractions have the same value, we call them ____________ ____________.
Equivalent Fractions
3/11 + 5/11
8/11
1- 3/5
2/5
Mr. Tipton is baking cookies and needs 5/6 cups of sugar to make them. He already has 2/6 of a cup at his house. How much does he need to make the cookies?
3/6
We use these kinds of fractions to make estimations about the size of a fraction.
Benchmark fractions
4/5 + 2/5
6/5
1- 2/9
7/9
Mrs. Flynn ate 2/12 of a pie and gave the rest to her friends. How much did she give away?
10/12