Adding and Subtracting Fractions with Unlike Denominators

Answer explanation

LCM is 12

1/4= 3/12

1/3= 4/12

Answer= 7/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

Subtract 5/6 and 1/3

LCM is 6

5/6= 5/6

1/3= 2/6

Answer is 3/6 (which equals 1/2)

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

You need to subtract 3/5-1/4

LCM is 20

3/5= 12/20

1/4= 5/20

Answer= 7/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

To find the total sweetener, add the fractions.

LCM is 12.

Convert: 2/3= 8/12 and 1/4= 3/12

Answer is 11/12.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

To find the total distance Henrik ran, add the two fractions: The common denominator is 8.

3/8= 3/8 and 1/2= 4/8

Answer = 7/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

Emma starts with 5/9 of a pizza. She gives away 1/3 of it, which means she has to subtract.

LCM= 9

5/9= 5/9

1/3= 3/9

Answer is 2/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

The gardener uses the soil, so you need to subtract. LCM is 12

3/4= 9/12

1/6= 2/12

Answer= 7/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

To find the total paint used, add the fractions:

The LCM for the denominators is 15

2/5 = 6/15

1/3 = 5/15

Answer= 11/15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

The baker starts with 7/10 and uses 1/5 of it, so you need to subtract.

LCM for the denominators is 10

7/10= 7/10

1/5= 2/10

Answer is 5/10, which is equal to 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Answer explanation

To find the total distance, add the two fractions

To find a common denominator, the LCM = 12

5/6= 10/12

1/4 = 3/12

Answer = 13/12 (which is equal to 1 1/12)

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2