Adding and Subtracting Fractions

LCD

100

What is the LCD of 2/3 and 1/4?

LCD = 12

200

What is the LCD of 1/5 and 1/2?

LCD = 10

300

What is the LCD of 3/5 and 1/3?

LCD = 15

400

What is the LCD of 5/6 and 2/9?

LCD = 18

500

What is the LCD of 3/5 and 2/8?

LCD = 40

Reduce Fractions (Simplest Form)

100

Reduce the fraction: 9/10

9/10

200

Reduce the fraction: 9/36

1/4

300

Write the fraction in its simplest form: 20/32

5/8

400

Write the fraction in simplest form: 9/12

3/4

500

Write the fraction in simplest form: 56/64

7/8

Estimating with Fractions

100

Estimate if the fraction is closest to 0, 1/2, or 1: 8/9

1

200

Estimate if the fraction is closest to 0, 1/2, or 1: 4/7

1/2

300

Estimate if the fractions are closest to 0, 1/2, or 1:

 5/9

1/2

400

Estimate if the fractions are closest to 0, 1/2, or 1:

7/9

1

500

Estimate if the fractions are closest to 0, 1/2, or 1:

1/9

0

Adding Fractions

100

3/8 + 3/8

6/8 = 3/4

200

2/3 + 1/6

5/6

300

2/5 + 1/2

9/10

400

4/6 + 1/4

11/12

500

3/9 + 1/6

9/18 or 1/2

Subtracting Fractions

100

7/8 - 5/8

2/8 = 1/4

200

7/10 - 1/2

2/10 = 1/5

300

2/3 - 1/12

7/12

400

4/6 - 1/4

5/12

500

5/6 - 3/9

9/18 = 1/2