Add and Subtract Mixed Numbers Like Denominator

3 ²/₅ + 4 ⁴/₅

• 7 ⁶/₅

• 8 ²/₅

• 8 ¹/₅

• 7¹/₅

7 ³/₄ + 4 ²/₄

• 12 ¹/₄

• 11 ⁵/₄

• 12 ⁵/₄

• 11 ¹/₄

9 ¹/₈ - 4 ⁵/₈

• 4 ⁶/₈

• 5 ⁴/₈

• 4 ⁴/₈

• 5 ⁶/₈

6 ¹/₄ - 2 ³/₄

• 3 ²/₄

• 3 ⁴/₄

• 4 ²/₄

• 4 ¹/₄

When I add or subtract fractions I must have _________ units.

• denominator

• numerator

• like

• unlike

USE SCRATCH PAPER AND SOLVE THIS WORD PROBLEM:

The classroom made cookies. They used 1 1/4 cups of white flour for the chocolate chip cookies. They used 2 1/3 cups of flour for peanut butter cookis. How much flour did they use in total?

• 3 2/7 cups

• 3 7/12 cups

• 1 1/12 cups

• 1 2/7 cups

When adding and subtracting fractions, you must first

• get a common denominator

• change it to an improper fraction

• flip the second fraction

• nothing

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction.