Add and Subtract Fractions

Like Denominators

100

Add the Fractions:

1/6 + 4/6 =

5/6

200

Subtract the Fractions:

6/7 - 4/7 =

2/7

300

Add the Fractions. Then simplify

2/6 + 2/6 =

 2/3

400

Add the Fractions:

3/4 + 2/4 =

5/4 or 1 1/4

500

Subtract the Fractions. Then Simplify.

40/100 - 20/100 =

1/ 5

Round/ Estimate

100

Round 9/10

about 1 whole

200

Round 1/5

about 0

300

Round 4/9

About 1/2

400

Estimate the sum of 2 1/4 + 3 7/8. 

State what you rounded each mixed number to.

2 + 4 = 6

500

Estimate the difference of 5 3/4 - 4 1/5.

Show what you rounded each mixed number to.

6 - 4 = 2

Add/Subtract Mixed Numbers

100

Add the Mixed Numbers:

1 2/4 + 1 1/4 =

2 3/4

200

Add the Mixed Numbers:

1 1/2 + 1/2 =

 2

300

Subtract the Mixed Numbers:

4 2/3 - 2 1/3 =

2 1/3

400

Subtract the Mixed Numbers:

3 3/4 - 1 1/8 =

2 5/8

500

Add the Mixed Numbers:

2 5/8 + 1 3/4 =

4 3/8

Add Fractions with Unlike Denominators

100

Add the Fractions:

2/4 + 1/4 =

 3/4

200

Add the Fractions:

1/5 + 5/10 =

 7/10

300

Add the Fractions. Then simplify

1/2 + 3/10 =

 4/5

400

Add the Fractions then simplify

1/4 + 5/10 =

 3/4

500

Add the Fractions:

4/5 + 1/2 =

13/10 or 1 3/10

Subtract Fractions with Unlike Denominators

100

Subtract the fractions:

3/4 - 1/2 =

1/4

200

Subtract the Fractions:

2/5 - 1/10 =

3/10

300

Subtract the Fractions:

1/2 - 2/5 =

1/10

400

Subtract the Fractions:

2/3 - 2/4 =

1/6

500

Subtract the Fractions. Then Simplify 

3/4 - 5/10 =

1/4