Adding Subtracting Fractions Objectives Objective We will add

Adding & Subtracting Fractions

Objectives • Objective: We will add and subtract like fractions. • Language Objective: We will use key words numerator, like denominators, and simplify.

Vocabulary • like fraction – fractions with the same denominator • numerator – the number above the line of a fraction, showing the number of parts of the whole • simplify – to reduce the numerator and denominator in a fraction to the smallest numbers possible • ⅜, ⅝, ⅞

Notes • To add or subtract fractions with like denominators, add or subtract the numerator and keep the denominator the same • Be sure to simplify the fraction • If the sum or difference is an improper fraction, write it as a mixed number

Example 3 5 + 4 5 = 7 5 1 2 5

Example X 4 5 - 1 5 = 3 5

Solve. 7 9 + 2 9 = 9 9 1

Solve. 53 100 29 100 = 24 100 6 25

Solve. 5 10 7 + 10 = 12 10 1 SIM Y! F I PL 2 10

Solve. 23 33 + 17 33 = 40 33 7 1 33

Solve. 42 42 - 8 42 = 34 42 17 21

Solve. 114 120 - 68 120 = 46 120 23 60

Solve. 7 8 + 5 8 = 12 8 1 1 2

Solve. Tony and Tasha had quesadillas for lunch. Tony ate of a quesadilla and Tasha ate of a quesadilla. How much more did Tony eat than Tasha? 5 8 - 3 8 = 2 8 1 4 more of a quesadilla

Solve. Barb and Janet ordered a pizza. Barb ate of the pizza. Janet ate of the pizza. How much of the pizza did Barb and Janet eat together? 3 8 + 2 8 = 5 8 of a pizza

Solve. Will has a board that is of a foot long. He cuts off of a foot. How long is the board now? 2 3 - 1 3 = 1 3 of a foot

Solve. Asia covers about of the world’s land area. Africa covers about of the world’s land area. How much of the world’s land area do Asia and Africa cover combined. 3 10 + 2 10 = 5 10 1 2 of the world’s land area

Solve. Rich bought of a pound of sausage and of a pound of hamburger. How much meat did Rich buy in all? 2 4 + 3 4 = 5 4 1 1 4 pounds of meat

Solve. Marlene spent of an hour grocery shopping and of an hour shopping for clothes at the mall. How much more time did Marlene spend at the mall than the grocery store? 4 5 - 3 5 = 1 5 of an hour

Wrap-Up • At the bottom of your notes, write one sentence summarizing today’s lesson. • In order to add and subtract fractions with common denominators…