Adding Fractions
(1 divided by 5) + (3 divided by 8)
23/40
Ms. Roberts is baking cookies for her class, and she needs 1/2 cup of sugar for the cookie dough, and 1/4 cup of sugar for the frosting.
How many cups of sugar does she need altogether?
3/4 cups of sugar
Solve with Area Model:
2/3 +1/4
11/12
7 - 2 3/8
4 5/8
5/9 + 2/3 (you may leave the answer in improper/or mixed number form)
11/9 or 1 2/9
Adesh evaluates the expression 1/4+2/5. His work is shown.
1/4 + 2/5
= 5/20 + 8/20
= 13/20
Why it is necessary to perform the step that finds a common denominator to add the fractions?
You need to have common denominators to add fractions together, so this step is mandatory!
Solve with area model:
5/6 - 3/5
7/30
7 3/8 - 2
5 3/8
1 2/3+ 5 2/7
6 20/21
Miss Song cuts a board that is 16 feet long into 3 equal pieces. Then she realizes that the pieces she cut each need to be 1 1/4 feet longer.
How long does each piece of board need to be?
6 7/12 feet long
Which 2 fractions add together to make 11/12
2/3 + 1/4
answers may vary
3 5/8-1 1/2
2 1/8
7 3/8 + 6 2/3
14 9/16
A pitcher holds 8 cups of water. The water is poured equally into 6 glasses.
Which expressions represent how much water is in each glass?
4/3, 8/6, 8 divided by 6
Lacy makes two different kinds of chili.
How many more pounds of beans does Lacy need?
Lucy needs 5 5/8 more pounds of beans
7 4/5 - 4 1/3
3 7/15
( 6 2/5 -8/5) + 6 3/10
11 11/30
Kayla needs to know whether she has more gold chain or more silver chain.
Without finding the actual sum, determine whether Kayla has more gold chain or more silver chain. Explain how you know.
She has more silver chain.
Answers may Vary
Three friends bring different kinds of cheese to a party. Kelly brings 1 5/6 pounds of cheddar. Riley brings 1 1/3 pounds of mozzarella. Lisa brings 2 1/2 pounds of swiss. How many pounds of cheese do they bring altogether?
5 2/3
3 1/4- 1 2/3
1 7/12