Adding and Subtracting Fractions

Add. 2/5 + 5/8

• 31/40

• 29/40

• 37/40

• 21/45

Subtract. 5/8 - 7/12

• 5/24

• 4/24

• 1/24

• 12/96

Add. 2/7 + 3/8

• 31/56

• 35/56

• 37/56

• 39/56

3/9 + 1/3 =

• 7/9

• 4/12

• 2/3

What fraction of the circle is pizza?

• 1/3

• 1/2

• 1/4

• 2/3

What number could be a common denominator for these two fractions? 2/3 and 3/4

• 3

• 7

• 4

• 12

What number could be a common denominator for these two fractions? 1/5 and 5/6

• 30

• 6

• 11

• 5

Before you add or subtract fractions what must be the same?

• Numerator

• Denominator

• Just add

• Just subtract

What is the least common denominator for 6/7 and 1/2?

• 12
• 14
• 7
• 6

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators