Mixed numbers and improper fractions

Add/Subtract

100

Add the following mixed numbers together:

13 5/6 + 6 1/3 = 

20 1/6

200

Subtract the following mixed numbers:

10  3/5 - 2  2/3 = 

7  14/15

300

Add the following mixed numbers together:

5 1/2 + 4 1/5 = 

9  7/10

400

Subtract the following mixed numbers:

5 2/9 - 1 5/6 = 

3 7/18

500

Subtract the following mixed numbers:

7 2/7 - 2 1/2 = 

4 11/14

mixed to improper

100

Change the following mixed number to an improper fraction:

1 1/8

9/8

200

Change the following improper fraction to a mixed number:

6/5

1 1/5

300

Change the following mixed number to an improper fraction:

1 2/3 

5/3

400

Change the following improper fraction to a mixed number:

13/3

4 1/3

500

Change the following mixed number to an improper fraction:

3 2/3

11/3

Least Common Denom

100

What is the least common denominator for the following fractions:

2/3 and 5/7

LCD =  21

200

What is the least common denominator for the following fractions:

4/5 and 7/8

LCD = 40

300

What is the least common denominator for the following fractions:

6/9 and 8/18

LCD = 18

or

LCD = 9   (even better!)

400

What is the least common denominator for the following fractions:

3/12 and 5/8

LCD = 24

500

What is the least common denominator for the following fractions:

LCD = 28