Unit 2 Math Review

Adding Fractions with Unlike Denominators

100

3/6 + 1/3 =

20/24;10/12;5/6

200

6/12 + 1/6 =

8/12

300

3/5 + 6/20 = 

18/20 or 9/10

400

8/10 + 2/30 = 

26/30 or 13/15

500

5/15 + 3/45 =

27/45 or 3/5

Subtracting Fractions with Unlike Denominators

100

3/5 -1/7 =

16/35

200

7/8 - 3/16 =

11/16

300

1/2 - 5/12 +=

1/12

400

3/4 -1/5 =

9/20

500

12/6 - 8/12 = 

16/12 or 1 4/12 or 1 1/3

Fraction Times a Whole Number

100

3/4 of 60

45

200

3/5 x 20 

12

300

2/3 of 18 

12

400

1/6 x 24

4

500

3/5 x 25

15

Adding and Subtracting Mixed Numbers

100

3 6/12 + 4 1/2 =

8

200

1 5/8 + 2 3/4 =

3 11/8 or 4 3/8

300

2 6/8 + 1 2/8 = 

4

400

3  7/8 + 2  9/10 =

6  31/40

500

1 4/5 – 6/7 =

33/35

Find Common Denominators

100

3/4  and 2/8

6/8  and 2/8

12/16 and 4/16

24/32  and 8/32

200

1/2 and 3/8

4/8 and 3/8

8/16 and 6/16

300

 2/5 and 4/8

16/40 and 20/40 

400

1/9 and 1/4

4/36 and 9/36

500

7/8 and 3/16

14/16 and 3/16