Adding & Subtracting Fractions

What is the Least Common Denominator(LCD) of 2/3 + 1/2? (LCD Is the same as LCM. SO find the LCM of 3 and 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

Convert the mixed fraction to a improper fraction.

• 27 /7

• 21 /7

• 31 /7

• 41/7

A contractor was paving a driveway. He mixed 4/7 ton of sand and 1/3 ton of concrete. How much did the mixture weigh?

• 1/4 ton

• 2/5 ton

• 5/7 ton

• 19/21 ton

Convert the mixed fraction to a improper fraction.

• 22 /9

• 20/9

• 31 / 9

• 4/6

15/7= Change to a mixed number (Remember: Divide!!)

• 1 3/7

• 2 1/7

• 1/7

• 33/7

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

• 5 1/2

• 1 1/6

• 5 5/14

• 4 19/24

6  1/4  -  2  3/4 

• 3   1/2

• 3  3/4

• 4  1/2

• 4   1/4