Topic 7 Review

Adding& Subtracting Fractions

100

3/8 + 1/6

9/24 + 4/24=13/24

200

4/5-1/3

12/15-5/15=7/15

300

7/9-(1/6+1/3)

14/18-(3/18+6/18)

14/18-9/18

5/18

400

3/4+(2/3-1/12)

9/12+(8/12-1/12)

9/12+7/12

16/12= 1 4/12 = 1 1/3

Adding& Subtracting Mixed Numbers

100

2 1/3+1 7/9

2 3/9+1 7/9

3 10/9

4 1/9

200

3 1/6 - 1 1/2

3 1/6 - 1 3/6

2 7/6 - 1 3/6

1 4/6 =1 2/3

300

4 1/2 - 1 5/8

4 4/8 - 1 5/8

3 12/8-1 5/8

2 7/8

400

4 2/3 + 6 15/18

4 12/18 + 6 15/18

10 27/18

11 9/18 =11 1/2

Word Problems

100

Maria used ⅔ cup of sugar for a cake and ⅚  cup of sugar for cookies. How many cups of sugar did she use in total?

4/6 + 5/6

9/6 =1 3/6 = 1 1/2 cups

200

A ribbon is 5 ½  meters long. If 2 ¾  meters are cut off, how much ribbon remains?

5 2/4 - 2 3/4

4 6/4 - 2 3/4

2 3/4 meters