Dr. Bowens Mathematical Operations with Rational Numbers Review

Adding Decimals & Subtracting Decimals

100

1.5 + 2.2

3.7

200

2.8 - 1.1

1.7

300

12.4 + 16.3

28.7

400

37.4 - 29.7

7.7

500

15.6 - 19.2 + 25.5

21.9

Mixed Numbers & Improper Fractions

100

Turn to a mixed number  7/2 

3 1/2

200

Turn to a improper fraction  3 1/4 

13/4

300

Turn to a mixed number  27/5 

5 2/5

400

Turn into an improper fraction  5 1/8 

41/8

500

Turn to a mixed number  66/7 

9 3/7

Add & Simplify

100

Add the fractions:

  2/5 + 1/5 

3/5

200

Add the fractions:  1/4 + (-1/2) 

 -1/4 

300

Add the fractions:   3/10 + 1/4 

11/20

400

Add the fractions:  5 1/2 + 2 2/3 

8 1/6

500

Add the fractions:  -3 1/4 - (-4 2/5) 

1 3/20

Subtract & Simplify

100

Subtract the fractions:   9/10 - 6/10 

3/10

200

Subtract the fractions: -4/7-3/7    

-1

300

Subtract the fractions:   1/5 - 1/10 

1/10

400

Subtract the fractions:   11/14 - (-1/2) 

9/7 or 1 2/7

500

Subtract the fractions:   23/100 - 2/25 

3/20

Multiply & Divide

100

-2 xx 2/7

-4/7

200

2/7 xx 2/3

4/21

300

-8/9 ÷ 4/3 

-2/3

400

1/3  ÷ 2/3

1/2

500

7 ÷ 3

7/3 or 2 1/3