Common Denominators
Adding and Subtracting Fractions
Fraction Of
Multiplying Fractions
Dividing Fractions
100
Find a common denominator for 4/5 and 7/15.
15

30

45

60

100
4/5  -  7/15
5/15 = 1/3
100
What is 1/8 of 32?
4
100
15 x 2/3
30/3 = 10
100
1/2 divided by 3/4
4/6 = 2/3
200
Find a common denominator for 2/3 and 3/4.
12

24

36


200
2/3  +  3/4
17/12 = 1 and 5/12
200
What is 2/8 of 32?
8
200
36 x 2/9
72/9 = 8
200
9/10 divided by 3
9/30 = 3/10
300
Describe a strategy you could use to find a common denominator for 2/3 and 3/4.
300
Make an estimate AND solve 6 and 4/9  +  4 and 2/3.

Estimate: 6 + 5 = 11

10 and 10/9 = 11 and 1/9

300
What is 1/5 of 35?
7
300
2/8 x 4/5
8/40 = 1/5
300
Carlotta has 3/4 gallon of paint. She wants to pour it into 8 smaller containers, putting the same amount in each container. How much paint should she put in each container?
3/32
400
What are some possible common denominators for 3/15 and 3/5?
5

15

30

45

400

Find an estimate AND solve 8 and 6/9 - 2 and 2/12

Estimate: 9 - 2 = 7

6 and 3/6 = 6 and 1/2

400
What is 4/5 of 35?
28
400

In the problem 27 x 5/9, will the product be greater than or less than 5/9? How do you know?

Greater than because you are multiplying 5/9 by a number greater than 1.
400
Danielle is running a 2-mile race around a track. If each lap around the track is 1/4 mile long, how many laps will she run?
8
500
Explain the process of finding a set of common denominators.
500
Jeff walked 3 and 3/5 miles on Wednesday and 2 and 4/5 miles on Thursday. How many miles did he walk on Wednesday and Thursday all together?
5 and 7/5 = 6 and 2/5
500
When you see a math problem written as "1/2 of" what operation are they talking about?
multiplication
500
3/7 x 2/5
6/35
500
1 and 3/6 divided by 1/2
18/6 = 3
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