Subtracting Whole Numbers and Fractions

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

There were 3 1/6 pies on the shelf. The server took away 1 5/6 pies from the shelf. How many pies remain on the shelf?

• 3 1/6 pies

• 2 1/6 pies

• 1 1/3 pies

• 2 pies

7 3/5 - 2 1/4

Marie needs 2 ¹/₄ yards of fabric/ She already has 1 ³/₈ yards. How many more yards of fabric does she need?

• ¹/₈ yard

• ³/₄ yard

• ⁷/₈ yard

• 1 ⁷/₈ yards

• 3/20
• 1/1
• 3/9
• 1/9

• -4/3
• 13/18
• 4/3
• 2/9

18/4 - 17/5

• 1 2/1

• 1 2/20

• 1/5

• 2 4/5

4 2/4 - 2 2/3

• 2 10/12

• 2 0/1

• 2 10/12

• 1 10/12

When you are adding and subtracting fractions, what is one of the first things you must do.

• Start adding and subtracting

• Find a common denominator

• Call a friend for help

• Panic