Unit 5 Review!

LCD

100

What is the LCD for the following pair of fractions:

1/4 and 1/2

4

200

What is the LCD for the following pair of fractions:

1/6 and 1/7

42

300

True or False: 30 is the correct LCD for 1/4 and 1/5

False

400

What is the LCD for the following pair of fractions:

1/8 and 1/3

24

500

What is the LCD for the following fractions:

1/3 and 1/11

33

Equivalent Fractions

100

Fill in the missing number:

1/5 = ?/20

4/20

200

Fill in the missing number:

10/20 = 5/?

5/10

300

Create equivalent fractions with an LCD of 10:

1/5

and

5/10

2/10

5/10

400

Fill in the missing number:

3/15 = ?/45

9/45

500

Create equivalent fractions with an LCD of 18:

8/9

and

2/3

16/18

and

12/18

Adding Mixed Numbers

100

2 1/4 + 6 2/4

8 3/4

200

1 1/3 + 3 2/6

4 4/6

300

5 7/10 + 2 12/20

7 26/20

Bonus 100 points: 8 6/20

400

9 2/7 + 1/14

9 5/14

500

3 6/12 + 3 4/5

6 78/60

OR

7 18/60 - bonus 100 points!

Subtracting Mixed Numbers

100

5 9/10 - 4 1/10

1 8/10

200

6 1/2 - 2 1/8

4 3/8

300

7 3/4 - 1 1/12

6 8/12

400

10 2/5 - 2 1/3

8 1/15

500

4 2/9 - 2 2/3

1 5/9

Estimating Mixed Numbers (add/sub)

100

Estimate: 1 2/3 + 1 8/9

2 + 2 = 4

200

Estimate: 5 1/4 + 5 2/9

5 + 5 = 10

300

Estimate: 2 4/5 + 3 1/10

3 + 3 = 6

400

Estimate: 9 3/4 + 12 5/6

10 + 13 = 23

500

Estimate: 7 4/9 + 2 3/7

7 + 2 = 9