Unit 9 Review

Estimating

100

Will the sum be greater than 1 or less than 1? 

3/4 + 2/3

greater than 1

200

Will the sum be greater than 1 or less than 1? 

1/3 + 5/8 

less than 1

300

Complete the equation using addends with like denominators. 

1/2 + 3/10 = 

5/10 + 3/10

400

Which is equivalent to 1/4 + 1/5?

1/20 + 1/20

       or 

5/20 + 4/20 

5/20 + 4/20

500

Which sum is less than 1?

7/12 + 5/8

       or 

5/12 + 4/10

5/12 + 4/10

Adding/Subtracting Fractions

100

2/9 + 5/12

23/36

200

7/8 - 1/4

5/8

300

5/6 + 4/15

34/30 or 17/15 or 1 2/15

400

3/4 - 7/12

2/12 or 1/6

500

9/10 - 1/6

22/30 or 11/15

Adding/Subtracting Mixed Numbers

100

6 3/8 + 2 1/6

8 13/24

200

1 1/2 + 5 3/7

6 13/14

300

5 5/6 - 1 1/4

4 7/12

400

3 5/6 - 2 5/8

1 5/24

500

3 1/9 + 4 5/6

7 17/18

Word Problems

100

Jan and Zofia are painting fences. Jan paints 2/3 of a fence. Zofia paints 5/6 of a fence. How much more of a fence does Zofia paint than Jan?

1/6 of a fence

200

Jayden uses 3 3/4 cups of whole wheat flour and 5 1/8 cups of white flour to make bread. How many cups of flour does Jayden use in all? 

8 7/8 cups

300

Fran has 2 5/6 pounds of modeling clay. She uses 1 5/8 pound of the clay to make a bowl. How much clay does Fran have left? 

1 5/24 pounds

400

Barbara mixes 2 2/3 cups of raisins and 4 1/4 cups of peanuts for a party snack. How many cups of peanuts and raisins does Barbara use in all? 

6 11/12 cups

500

Catherine practice the flute for 1 3/8 hours on Friday and for 2 1/4 hours on Saturday. How much longer does Catherine practice the flute on Saturday than on Friday? 

7/8 hour

Regrouping

100

8 1/6 - 2 2/9

5 17/18

200

1 7/12 + 3 5/8

5 5/24

300

4 2/7 - 1 1/2 

5 2/6 or 5 1/3

400

2 5/12 + 2 7/8

5 7/24

500

7 1/8 - 2 3/4

4 3/8