Adding & Subtracting Mixed Numbers Review

Vocabulary

100

A rough calculation, not an exact amount

Estimate

200

To reduce the fraction

Simplify

300

Contains whole number part and a fraction

Mixed Number

400

Has a numerator that is greater than the denominator

Improper Fraction

500

To represent a number or fraction in a different way to find the sum or difference

Regroup

Estimate

100

3 1/3 + 4 5/6

3 + 5 = 8

200

2 4/5 - 3/8

3 - 1/2 = 2 1/2

300

8 3/4 - 2 2/3

9 - 3 = 6

Add or Subtract Mixed Numbers

100

3 3/7 - 2 1/14

1 5/14

200

14 1/6 + 2 2/3

17 5/6

300

4 1/2 + 5 7/10

4 5/10 + 5 7/10

9 + 1 2/10

10 1/5

400

15 1/8 - 9 1/2

5 5/8

500

9 3/8 - 4 5/6

4 13/24

Story Problem

100

Will spent 12 3/4 minutes on homework on Saturday and 9 2/12 on Sunday. ABOUT how much time did he spend on homework over the weekend?

13 + 9 = ABOUT 22 minutes

200

Cece made two types of cookies for her volleyball team. She used 2 2/5 cups of flour for one recipe and 3 2/3 cups for the second. How much flour did Cece use to bake her cookies? 

2 2/5 + 3 2/3 

2 6/15 + 3 10/15 = 5 16/15 

6 1/15 cups of flour

300

Reed ran 7 6/7 miles yesterday morning and then 9 1/3 miles after school. How many more miles did Reed run in the afternoon than the morning?

9 7/21 - 7 18/21

8 28/21 - 7 18/21

1 10/21 miles more

Story Problems Again & They Are the Different But Actually The Same

100

Andrew ran 3/12 of a mile on after school on Friday, 2 1/3 miles on Saturday, and 7/9 of a mile on Sunday. ABOUT how far did Andrew run over his weekend?

1/2 + 2 + 1 = 3 1/2 miles

200

Liliana needed to collect 13 3/4 ounces of buttons for her art project. So far, Liliana has collected 9 7/10 ounces. How many more ounces of buttons does Liliana need to collect?

13 3/4 - 9 7/10 

4 2/40 =

4 1/20 ounces

300

Ethan got 8 2/3 hours of sleep on Saturday and 9 5/8 hours of sleep on Sunday. How many hours of sleep did Ethan get this weekend? 

8 16/24 + 9 15/24 

17 31/24

18 7/24 hours