Simplest Form
Estimating
Common Denominators
Mixed Number +/-
Mixed Number +/-
100

The simplest form of 6/8

What is 3/4

100

Estimate the sum of 3/5 and 5/6

What is 1  1/2

100
The lowest common denominator of 5/6 and 3/4
What is 12
100
14  1/4 + 9  5/10

23  3/4

100

8  11/12 - 5  2/3

3  1/4

200

The simplest form of 8/12

What is 2/3

200

Estimate the difference between 15/16 and 7/8

What is 0

200

The lowest common denominator for 3/7 and 2/9

What is 63

200

4  1/5 - 2  1/4

1  19/20

200

9  7/20 - 1  3/5

7 3/4

300

The simplest form of 27/81

What is 1/3

300

What is the difference between 3/6 and 1/8

What is 1/2

300

The lowest common denominator for 8/21 and 3/7

What is 21

300

7  1/2 - 5/8

6  7/8

300

8 - 3  7/10

4  3/10

400

The simplest form of 16/4

What is 4

400

What is the sum of 20  1/12 and 4  5/6

What is 25

400
The lowest common denominator for 3/8 and 5/11

What is 88

400

1  1/3 + 3  3/8

4  17/24

400

1  6/7 + 5  13/14  - 2  1/2

5  2/7

500

The simplest form of 3  36/6

What is 9
500

What is the difference between 5  7/8 and 4  49/100

What is 1  1/2

500

The lowest common denominator for 3/17 and 50/51

What is 51

500

9 - 4 3/8

4  5/8

500

7  5/6 -  1  1/6  -  2  2/3

4

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