Show:
Simplifying Fractions
Adding/Subtract Fractions
Adding/Subtracting Mixed Numbers
Multiplying Fractions by a Whole Number
Estimation
100

6/12 

1/2

100

1/2 + 3/4 = 

1 1/4

100

1 1/2 + 3 2/4 = 

5

100

12 x 3/4 = 

9

100

Estimate the sum using benchmarks:

1 1/2 + 4 5/6 = 

6 1/2

200

9/12 

3/4

200

5/6 + 1/3 =

1 1/6

200

9 3/10 - 4 1/10 =

5 1/5

200

8 x 1/4 = 

2

200

Estimate the sum using benchmarks:

6 7/8 + 5 6/8 = 

13

300

3/12 

1/4

300

7/12 - 1/3 =

1/4

300

5 5/6 - 4 1/8 = 

1 17/24

300

15 x 2/3 =

10

300

Estimate the sum using benchmarks:

1 1/5 + 4 2/5 = 

5 1/2

400

24/26

2/3

400

6/10 - 1/3 = 

4/15

400

1 1/4 + 4 1/3 =

5 7/12

400

4 x 1/2 =

2

400
Estimate the difference using benchmarks:


12 3/4 - 1 1/8 = 

12

500

3/18

1/6

500

3/8 - 1/5 = 

7/40

500

7 5/12 - 2 1/2

4 11/12

500

9 x 2/3 = 

6

500

Estimate the difference using benchmarks:

8 7/8 - 5 1/2 = 

3 1/2