Do students need the least common denominator?

Any common denominator works; multiplying the two denominators always succeeds. Using the least one just keeps the numbers smaller.

How do I print or save these worksheets as a PDF?

Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.

Can I get a fresh set of problems?

Yes. Click New problems for a brand new randomly generated worksheet, as many times as you like.

Is this worksheet generator free?

Yes. Every generator on the site is free to use, with no account, no watermark and unlimited printing for classroom or home use.

Adding fractions with unlike denominators worksheet generator

Denominators differ, so students must find a common denominator before combining numerators.

Fractions With Unlike Denominators

Name: Date:

1.
4/9 + 3/4 =
2.
1/6 + 4/5 =
3.
4/9 + 9/10 =
4.
6/9 + 3/10 =
5.
4/5 + 3/4 =
6.
5/7 + 6/9 =
7.
2/5 + 1/2 =
8.
2/8 + 1/2 =
9.
3/7 + 2/10 =
10.
1/2 + 1/8 =
11.
5/6 + 1/8 =
12.
3/6 + 8/10 =
13.
2/5 + 2/4 =
14.
1/7 + 3/4 =
15.
1/5 + 1/10 =
16.
1/3 + 6/8 =
17.
2/5 + 1/2 =
18.
3/9 + 1/8 =
19.
3/6 + 1/3 =
20.
2/8 + 7/10 =

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Fractions With Unlike Denominators — Answer Key

Name: Date:

1.
4/9 + 3/4 =
43/36
2.
1/6 + 4/5 =
29/30
3.
4/9 + 9/10 =
121/90
4.
6/9 + 3/10 =
29/30
5.
4/5 + 3/4 =
31/20
6.
5/7 + 6/9 =
29/21
7.
2/5 + 1/2 =
9/10
8.
2/8 + 1/2 =
3/4
9.
3/7 + 2/10 =
22/35
10.
1/2 + 1/8 =
5/8
11.
5/6 + 1/8 =
23/24
12.
3/6 + 8/10 =
13/10
13.
2/5 + 2/4 =
9/10
14.
1/7 + 3/4 =
25/28
15.
1/5 + 1/10 =
3/10
16.
1/3 + 6/8 =
13/12
17.
2/5 + 1/2 =
9/10
18.
3/9 + 1/8 =
11/24
19.
3/6 + 1/3 =
5/6
20.
2/8 + 7/10 =
19/20

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Frequently asked questions

Do students need the least common denominator?: Any common denominator works; multiplying the two denominators always succeeds. Using the least one just keeps the numbers smaller.
How do I print or save these worksheets as a PDF?: Click Print worksheet and choose your printer, or pick “Save as PDF” as the destination to keep a digital copy. The answer key prints on its own page.
Can I get a fresh set of problems?: Yes. Click New problems for a brand new randomly generated worksheet, as many times as you like.
Is this worksheet generator free?: Yes. Every generator on the site is free to use, with no account, no watermark and unlimited printing for classroom or home use.