Adding Subtracting Mixed Numbers

Jerome wants to walk to school. He lives 2 1/4 miles away. So far, he has walked 7/8 of a mile. How far does he have left to go?

• 1 3/8

• 2 6/4

• 1 6/8

• 2 3/4

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Add the mixed numbers vertically. Simplify if needed.

Add: 4 4/5 + 3 3/5

• 7 5/7

• 7 2/5

• 8 2/5

• 8

2  2/10 + 5  1/5 =
Reduce if needed.

• 5  3/4

• 7  2/5

• 3  3/5

• 7  4/10

5  1/6 + 8  8/9=
Reduce if needed.

• 14  1/18

• 13  1/18

• 13  19/18

• 4  1/5

Carla's sister is 4 1/3 feet tall and her brother is 2 2/3 feet tall. How much taller is her sister than her brother?

• 1 1/6 feet

• 2 1/3 feet

• 2 1/6 feet

• 1 2/3 feet

9  1/2 - 2  2/4=
Reduce if needed.

• 7

• 7  1/2

• 11

• 11  1/2

8  2/4 - 3  1/3=
Reduce if needed.

• 5  2/12

• 5  1/6

• 11  1/6

• 8  2/3

• Emma is correct because she rewrote each mixed number as a fraction greater than one

• Emma is incorrect because she only wrote the whole numbers as fractions greater than one

• Emma is correct because she only subtracted the numerators and not the denominators