Adding and Subtracting Fractions Review

Multiple Choice

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Multiple Choice

What are the steps for adding and subtracting fractions when they have the same denominator?

• Add the numerators, the denominator stays the same.

• Add the numerators, add the denominators.

Multiple Choice

Convert to a mixed number.

$$\frac{14}{12}=$$  

• $$1$$  

• $$1\ \frac{2}{14}$$  

• $$1\ \frac{2}{12}$$  

• 1 r2

Multiple Choice

First we need to...

• add numerators and denominators

• convert to mixed numbers

• list the multiples of each DENOMINATOR to find a common denominator

• list the multiples of each NUMERATOR to find a common denominator

Multiple Choice

Which common multiple can be used as a common denominator to solve this problem?

$$\frac{8}{9}-\frac{3}{5}=$$  

• 9

• 20

• 27

• 45

Multiple Choice

How do we convert to an equivalent fraction?

• multiply the numerator and denominator by the same number

• add the same number to the numerator and denominator

• multiply just the denominator by the same number

Poll

How well do you know the steps to add and subtract fractions with unlike denominators?

Multiple Choice

What like unit can I use for 1/10 and 1/3?

• 6

• 5

• 1

• 30

Multiple Choice

What numbers can I multiply to make a like unit for 3/5 and 2/3?

• 3 X 2 = 6

• 3 X 3 = 9

• 3 X 5 = 15

• I cannot make a like unit.

Multiple Choice

Daniel watched a beetle and a spider on the sidewalk. The beetle crawled 1/2 of a yard and the spider crawled 1/6 of a yard. How much farther did the beetle crawl than the spider?

• 1/4

• 1/3

• 1/2

• 2/3

Multiple Choice

6  1/4  -  2  3/4 

• 3   1/2

• 3  3/4

• 4  1/2

• 4   1/4

Multiple Choice

To make like units, I can multiply the _________________ to find a common multiple.

• numerators

• denominators

• whole numbers

• mixed numbers

Multiple Choice

What is the Least Common Denominator(LCD) of 2/3 + 1/2?

• 2

• 3

• 6

• 12

Multiple Choice

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

• 1 1/12

• 3/4

• 2/3

• 1 1/2

Multiple Choice

1 3/7 and 7 1/7 have like units.

• True

• False

Multiple Choice

What is the sum of these fractions?

• 4/5

• 3/20

• 17/20

• 4/20

Multiple Choice

3/8 and 1/3 have like units.

• True

• False

Multiple Choice

Convert the mixed fraction to a improper fraction.

• 22 /9

• 20/9

• 31 / 9

• 4/6

Multiple Choice

Convert the mixed fraction to a improper fraction.

• 27 /7

• 21 /7

• 31 /7

• 41/7

Multiple Choice

Simplify ²⁴/₁₀

• 2

• ⁶/₅ or 1¹/₅

• ¹²/₅ or 2²/₅

Multiple Choice

Simplify ¹²/₁₆

• ³/₄

• ²/₃

• ¹⁰/₁₂

• ²⁴/₃₂

Multiple Choice

Simplify ⁶/₈

• ³/₄

• ²/₃

• ¹²/₂₄

• ³/₈