Rule for Adding or Subtracting Fractions

The number one rule for adding and subtracting fractions is to...

• find the GCF.

• find a least common denominator.

• line up the fractions.

• add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/8 + 4/8 =

• 7/8

• 7/16

• 9/8

• 1/8

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

7 5/12 - 2 7/12 =

• 5 5/12

• 4 10/12

• 4 2/12

• 4 5/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

When adding or subtracting fractions, I have to use or find ________ before I can solve.

• Factoring

• LCD

• GCF

• Division

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

9/12 - 3/6 =

• 3/12

• 1/2

• 1/4

• 2/3

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/7 + 12/14 =

• 17/14

• 1 8/14

• 22/14

• 1 4/7

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Which strategy helps solve ALL adding and subtracting of fractions problems?

• Number lists

• Stacking them

• Erasing them

• Number lines

Tags

CCSS.4.NF.B.3A

22/23 - 14/23 =

• 8/24

• 8/23

• 1/23

• 36/23

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

4/9 + (-2/3) = 

• 1 1/9

• -1 1/9

• 2/9

• -2/9

Tags

CCSS.7.NS.A.1C

-1 ⁷/₈ + (-3 ¹/₂)

• 5 ³/₈

• -5 ³/₈

• 1 ⁵/₈

• -1 ⁵/₈

Tags

CCSS.7.NS.A.1C