Fractions 1
What do we need before we add, subtract, or compare fractions?
Common denominator
What part of the fraction stays the same when adding or subtracting?
Denominator
How do we multiply fractions?
"Straight across"
"Numerator times numerator, denominator times denominator"
When dividing fraction, what should we think/say?
"Keep change flip"
"Keep flip change"
What part of the fractions tells you the parts being counted?
Numerator
Mrs. Diaz has 4 brownies left. She wants to share the brownies equally among her 5 children. How much will each child receive?
4/5 of a brownie
How do we know a fraction is equivalent to ONE WHOLE?
If the numerator and denominator are the same number
1/2 divided by 6
1/12
A fraction that has a whole number and a fraction put together is called ?
Mixed number
Mr. Jordan started his trip home with 3/4 of a tank of gas. When he arrived home, he had 1/8 of a tank of gas. How much gas did he use during his trip?
5/8 of a tank
Sasha's brother ate 2 1/8 jars of baby food for lunch and another 1/2 jar for snack. How much baby food did Sasha's brother eat?
2 5/8 jars of baby food
Terrance is organizing wrenches in his toolbox. This list shows the sizes, in inches, for three of the wrenches. Put the sizes of the wrenches on order from least to greatest.
1/2 5/8 9/16
1/2 , 9/16, 5/8
A fraction whose numerator is greater than its denominator is called?
Improper fraction
Emma has a piece of string that is 75 inches long. She cuts it into 12 equal pieces. How long is each piece?
6 1/4 inches long
Crystal Blue Lake rose exactly 1/5 of a foot each day for 22 days. How many feet did the lake rise in those 22 days?
4 2/5 feet
Jalissa's mom made 9 cakes for the bake sale. She cuts the cakes into slices that are 1/8 of the cake. How many pieces of cake does she have?
72 pieces of cake
The fraction bar is also a what?
Division sign (or means to divide)
Mrs. Kimbell made 5 1/4 dozen brownies for the school bake sale. At the end of the bake sale, she had 2 1/2 dozen brownies left. How many brownies did she sell at the bake sale?
2 3/4 dozen brownies left
Martin has 4 cups of sugar. He needs 1/3 of a cup of sugar to make a batch of cookies. How many batches of cookies can he make?
12 batches
A bike path is 2 3/4 miles long. The city plans to extend the path another 1 1/4 miles. How long will the bike path be after the extention?
4 miles
Proper fractions
The fifth-grade class has 240 students. Girls make up 3/4 of the class. How many boys are in the fifth grade?
60 boys
Devin has a garden. He uses 1/4 of the garden to plant peppers, 1/6 of the garden to plant squash, and 1/8 of the garden to plant beans. How much of the garden does he have left to plant tomatoes?
11/24 of his garden is left to plant tomatoes
Jake 3 5/6 feet of rope. He cut two pieces off that were 1 2/3 feet each. How much rope does Jake have left.
1/2 foot of rope
Give any fraction that will make the sentence true:
1 1/4 x ____ > 1 1/4
Any improper fraction will work!