Adding and Subtracting Fractions and Decimals

What is the Least Common Denominator(LCD) of 2/3 + 1/2?

• 2

• 3

• 6

• 12

What is the Least Common Denominator of 1/5 + 2/10

• 5

• 10

• 50

• 15

Sally ran 1/3 of a mile and swam 5/6 of a mile. In simplest form, how much farther did she swim than she ran?

• 1/2

• 5/18

• 4/3

• 3/6

A plumber is fitting a water pipe that is 3/4 foot long on to a water pipe that is 2/12 foot long. How long will the finished pipe be?

• 11/12 foot

• 8/16 foot

• 2/12 foot

• 1 foot

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

• 1 1/12

• 3/4

• 2/3

• 1 1/2

6  1/4  -  2  3/4 

• 3   1/2

• 3  3/4

• 4  1/2

• 4   1/4

10  3/4
-7  1/4
________

• 3  1/4

• 4  1/2

• 3  1/2

• 18

9  5/9
- 6  5/6
________

• 3  13/18

• 3  10/18

• 2  13/18

• 2  1/2

10.12 - 0.9

• 9.22

• 10.03

• 9.23

• 10.12

15 - 8.63

• 6.37

• 8.48

• 6.21

• 8.42