Estimate
Common Denominator
Sum
Difference
Random
100

Estimate the sum of 3/4 and 1/5

1 or 1/2

100

What is the common denominator between 7/9 and 2/3

9 or 27

100

Find the sum of 1/9 + 5/6

17/18

100

Find the difference of 7/8 - 2/3

5/24

100

How tall is Ms. Lange?

4'10

200

Estimate the sum of 9/10 + 1/6

1

200

What is the common denominator between 1/3 and 4/5

15

200

Find the sum of 1/12 + 3/8

11/24

200

Find the difference of 4/5 - 2/15

2/3

200

What is an equivalent fraction?

Fractions that are the same value.

300

Estimate the difference of 3/5 - 1/12

1/2

300

What is the common denominator between 3/10 and 9/8

40 or 80

300

Find the sum of 2 and 3/10 + 2 and 4/5

5 and 1/10

300

Find the difference of 12 and 1/4 - 7 and 1/2

4 and 3/4

300

What is a common denominator?

When two or more fractions have the same bottom number, found by using multiples.

400

Estimate the sum of 12 and 8/25 + 13 and 5/9

26

400

What is the common denominator between 5/12 and 3/5

60

400

Find the sum of 3 and 1/3 + 9 and 11/12

13 and 1/4

400

Find the difference of 4 and 1/6 - 1 and 2/3

2 and 1/2

400

Mandi works at a daycare for 5 hours. She spent 1 and 1/2 hours feeding kids, 3/5 hours putting them to sleep, and 2 1/5 playing with them. How much time did she spend changing diapers?

7/10 hours

500

Estimate the difference of 10 and 5/6 - 2 and 3/8

8 and 1/2

500

What is the common denominator between3/8 and 9/20

40 or 160

500

Lindsey used 1 and 1/4 gallons of blue paint for the ceiling and 4 and 3/8 gallons of red paint for the walls. How much paint did Lindsey use in all?

5 and 5/8 gallons

500

The average weight of a basketball is 21 and 1/10 ounces. The average weight of a baseball is 5 and 1/4 ounces. How many more ounces does the basketball weigh?

15 and 17/20 ounces

500

I spent 8 hours at school. I spent 2 and 3/4 hours grading 5th grade. I spent 3 and 2/3 hours grading 6th grade. How much time did I spend doing other things?

1 and 7/12 hours

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