Adding and subtracting fractions

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

• Numerator

• Denominator

• Just add

• Just subtract

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is ³/₄ + ¹/₄?

• 1 or ⁴/₄
• ³/₄ 
• ¹⁰/₁₆ or ⁵/₈ 
• ¹/₄

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is ¹/₈ + ⁵/₈?

• 1
• ⁶/₁₆ or ³/₈
• ⁶/₈ or ³/₄
• ²/₄ or ¹/₂

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is ¹⁵/₁₆ - ¹²/₁₆?

• ¹/₃
• ⁴/₁₆ or ¹/₄
• ³/₁₆
• ²/₁₆ or ¹/₈

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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

• 5
• 10
• 50
• 15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• 2

• 3

• 6

• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions?

• 4/5
• 3/20
• 17/20
• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 3/20
• 1/1
• 3/9
• 1/9

Tags

CCSS.7.NS.A.1C

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 1/12
• 1
• 2/35
• 23/25

Tags

CCSS.7.NS.A.1C