Add and Subtract Fractions

Review: What is 1/10 + 5/10?

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Match the following differences

• 1/10

• 8/10 - 7/10 =

• 1/3

• 4/10 - 1/10 =

• 0/5

• 8/9 - 4/9 =

• 4/9

• 2/3 - 1/3 =

• 3/10

• 4/5 - 4/5 =

Tags

CCSS.4.NF.B.3A

Landon has 8/10 of his lawn left to mow. He mows 6/10 of the lawn before breaking for breakfast. How much more of the lawn does Landon have left to mow?

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Kirk has 3/4 of a carton of eggs. He uses some of the eggs to make an omelette and now has 2/4 of the carton left. What fraction of the carton did Kirk use?

Tags

CCSS.4.NF.B.3A

• 3/20
• 1/1
• 3/9
• 1/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• -4/3
• 13/18
• 4/3
• 2/9

Tags

CCSS.7.NS.A.1C

How confident are you in your ability to add or subtract fractions with like denominators?

• 4

• 3

• 2

• 1

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

When adding fractions, we first need to find...

• Greatest common factor

• Common denominators

• Common numerators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Same signs add and keep,
different signs subtract,
keep the sign of...

• the first number

• the smaller number

• the bigger value

• the last number

Tags

CCSS.7.NS.A.1C