5th Ch 3 Adding & Subtracting Fractions Review

+/- with Like Denominators

100

2/6 + 3/6

5/6

200

9/12-8/12

1/2

300

8/2-2/2

6/2 or 3

400

1 9/12-14/12 (answer with an improper fraction)

19/12

500

10/10+21/10 (answer with a mixed number)

3 1/10

+/- with Unlike Denominators

100

1/4 + 5/8

7/8

200

2/5 + 1/2

9/10

300

7/12 - 1/2

1/12

400

5/6 - 2/12

3/4

500

6/8-3/9

24/72

Adding Mixed Numbers with Unlike Denominators

100

4 1/6 + 9 2/3

13 5/6

200

8 1/4 + 8 5/6

17 1/12

300

8 4/6 + 4 3/5

13 4/15

400

8 7/9 + 2 2/3

11 12/27

500

12 1/5+9 2/4

21 14/20

Subtracting Mixed Numbers with Unlike Denominators

100

7 3/4 - 1 1/12

6 2/3

200

11 1/2- 7 3/8

4 1/8

300

17  -  8 2/3

8 1/3

400

7 4/5 - 2 9/10

4 9/10

500

11 5/6-3 2/3

8 1/6

Improper Fractions and Mixed Numbers

100

What is 8/7 written as a mixed number?

1 and 1/7

200

What is 1 and 2/3 written as an improper fraction? 

5/3

300

What is 14/3 written as a mixed number?

4 and 2/3

400

What is 8 and 11/12 written as an improper fraction? 

107/12

500

What is 88/5 written as a mixed number?

17 and 3/5

Fraction Vocabulary

100

3 and 4/6 is an example of a ____________

Mixed Number

200

12/7 is an example of an _______________.

improper fraction

300

Fractions must have the same _________ before adding or subtracting. (Hint: This is the 1st step when adding or subtracting fractions)

denominator

400

Use __________ fractions after finding the LCM or common denominator before adding or subtracting. (Hint: This is the 2nd step when adding or subtracting fractions)

equivalent

500

To find the common denominator, you need to find the __________

Least common multiple