Adding and Subtracting Fractions

• 8/10 or 4/5

• 11/10 or 1 1/10

• 8/15

• 11/15

• 3/20

• 6/6

• 6/10

• 3/10

Solve: ²⁄₃ + ¹⁄₅

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Which of the following is ²/₅ equivalent to?

• ²⁄₁₀

• ¹⁄₅

• ⁴⁄₅

• ⁴⁄₁₀

What common denominator could you use if you wanted to add the fractions ¹⁄₂ and ¹⁄₆?

• 2

• 4

• 6

• 8

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

The number on top of the fraction bar is called the _______; and the number under the fraction bar is called the ______.

• denominator; numerator

• numerator; denominator

• mixed number; fraction

• fraction; mixed number

Mrs. Gilchrist is preparing a special dessert. It takes her 1 hour from start to finish to make the dessert. She prepares the apple filling for 1/3 of an hour. It takes 1/5 of an hour for her to make the dough. Then, she places the dessert in the oven. How long will it take the dessert to bake?

• 5/15 of an hour or 20 minutes

• 6/15 of an hour or 24 minutes

• 7/15 of an hour or 28 minutes

• 8/15 of an hour or 32 minutes

• 57

• 58

• 59

• 60

Keira made trail mix using nuts and dried fruits. The recipe calls for 5/8 of a pound of nuts and 1/4 of a pound of dried fruits. Using fraction sense, how much trail mix did Keira make?

• more than 1/4 of a pound but less than 5/8 of a pound

• more than 1 pound

• less than 5/8 of a pound

• more than 1/2 pound but less than 1 pound