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Adding and Subtracting Fractions - Printable Mathematics Worksheets grade 3 - Wayground

Adding and Subtracting Fractions

21 questions

3rd - 3rd Grade

Mathematics

This Grade 3 mathematics worksheet helps students add and subtract fractions with like denominators. Across 21 questions—18 multiple-choice and 3 multiple-select items—students find sums and differences by operating on numerators while keeping the denominator, add several like-denominator fractions, and recognize results equivalent to a whole number, such as 6/6 = 1. The worksheet also applies these calculations to short situations involving portions of a pizza and a candy bar. As a free printable worksheet with an answer key, it can support guided practice, independent work, review, or a quick assessment of fraction fluency. The varied answer choices reveal common errors, including adding denominators or selecting an unsimplified or incorrect fraction. Multiple-select questions give students additional practice identifying all correct representations of a fraction sum, while the word problems connect symbolic fraction operations to real-world quantities.

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Worksheets

Adding and Subtracting Fractions

Total questions: 21

Name
Class
Date
1.

1012\frac{10}{12}   −-   312\frac{3}{12}   ==  



a)

712\frac{7}{12}  

b)

1312\frac{13}{12}  

c)

612\frac{6}{12}  

2.

610\frac{6}{10}   ++   410\frac{4}{10}   ==       There are two correct answers.

a)

1010\frac{10}{10}  

b)

210\frac{2}{10}  

c)

1

3.

48\frac{4}{8}   −-   28\frac{2}{8}   ==  

a)

24\frac{2}{4}  

b)

28\frac{2}{8}  

c)

68\frac{6}{8}  

4.

56\frac{5}{6}   −-   16\frac{1}{6}   ==  



a)

46\frac{4}{6}  

b)

26\frac{2}{6}  

c)

76\frac{7}{6}  

5.

38\frac{3}{8}   ++   48\frac{4}{8}   ==  



a)

14\frac{1}{4}  

b)

98\frac{9}{8}  

c)

78\frac{7}{8}  

d)

716\frac{7}{16}  

6.

14\frac{1}{4}   ++   24\frac{2}{4}  

a)

34\frac{3}{4}  

b)

38\frac{3}{8}  

c)

316\frac{3}{16}  

7.

3/5 + 1/5 =

a)

8/6

b)

4/10

c)

4/5

8.

What is 4/6 + 2/6?

a)

6/12

b)

2/6

c)

1 or 6/6

9.

8/9 - 3/9 =

a)

5/9

b)

5/0

c)

11/9

10.

8/5 - 4/5 =

a)

4/5

b)

12/5

c)

4/0

11.

5/7-2/7=

a)

7/7

b)

3/0

c)

3/7

d)

7/14

12.

2/7+3/7+1/7=

a)

6/7

b)

7/7

c)

6/21

d)

7/21

13.

1/8+1/8+1/8=

a)

3/24

b)

4/8

c)

1/24

d)

3/8

14.

1/4+1/4=

a)

2/8

b)

2/4

c)

1/4

d)

1/8

15.

3/9 + 4/9 =

a)

7/18

b)

7/9

c)

12/9

d)

12/81

16.
4/6 + 2/6 =
a)
1
b)
5/6
c)
6/12
17.

Kayla has 3/9 of a pizza and Lille gave her 2/9 of a pizza. How much pizza does Kayla have now?

a)

5

b)

5/9

c)

1/9

d)

6/9

18.
9/11 - 2/11 =
a)
7/11
b)
11/11
c)
1
d)
7/10
19.
Brad ate 3/4 of his Kit-Kat bar and gave the rest to Zech.  How much of the Kit-Kat bar did Zech get to eat?
a)
3/4
b)
1/4
c)
2/4
d)
None
20.
3/8 + 2/8 + 1/8 = ?
a)
6/8
b)
5/8
c)
4/8
d)
7/8
21.
Kyleigh made a giant cookie to eat for lunch. She ate 1/5 of it and felt sick.  She gave the rest of the giant cookie to Noelle.  How much of the cookie did Noelle have? 
a)
4/5
b)
1/5
c)
3/5
d)
5/5
Answer Key

Adding and Subtracting Fractions

Total questions: 21

1.
a)

712\frac{7}{12}  

2.
c)

1

, a)

1010\frac{10}{10}  

3.
b)

28\frac{2}{8}  

4.
a)

46\frac{4}{6}  

5.
c)

78\frac{7}{8}  

6.
a)

34\frac{3}{4}  

7.
c)

4/5

8.
c)

1 or 6/6

9.
a)

5/9

10.
a)

4/5

11.
c)

3/7

12.
a)

6/7

13.
d)

3/8

14.
b)

2/4

15.
b)

7/9

16.
a) 1
17.
b)

5/9

18.
a) 7/11
19.
b) 1/4
20.
a) 6/8
21.
a) 4/5

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FAQs

What does the Adding and Subtracting Fractions worksheet cover?

This Grade 3 worksheet focuses on adding and subtracting fractions with like denominators through 18 multiple-choice and 3 multiple-select questions. Students solve one-, two-, and three-fraction calculations, identify equivalent whole-number results such as 6/6 = 1, and apply fraction operations to pizza and candy-bar situations.

How can I use this worksheet to teach adding and subtracting fractions with like denominators?

First model that the denominator names equal-sized parts and stays the same when adding or subtracting like-denominator fractions, while the numerators are combined. Then work through a few of the worksheet’s equations, such as 3/5 + 1/5 or 8/9 − 3/9, before having students explain their choices in the multiple-select items and connect the word problems to fraction equations.

What mistakes should I watch for when students complete this fraction worksheet?

Watch for students adding or subtracting denominators, such as treating 3/5 + 1/5 as 4/10, or choosing numerators and denominators that do not match the operation. Students may also miss that 6/6 is equivalent to 1, select only one correct response on a multiple-select item, or choose the amount eaten instead of the remaining amount in the candy-bar problem.

How do I assign and grade this Adding and Subtracting Fractions worksheet?

The worksheet is available as a printable PDF and as a digital quiz on Wayground, and it includes a complete answer key for the 21 questions. Printable submissions can be graded by scanning student work with the Wayground for Teachers app.

How can I differentiate this fractions worksheet for my students?

In the worksheet’s Advanced Settings, adjust font spacing or choose a larger font size to make the fraction equations, answer choices, and short word problems easier to read. You can also apply a dyslexia-friendly font or translate the worksheet into another language while keeping the like-denominator fraction practice intact.

Where can I find more worksheets like this on Wayground?

Wayground offers a broad collection of free printable worksheets and practice problems across all subjects, with downloadable PDFs and answer keys to help students build essential skills and concepts. Browse more resources at https://wayground.com/en-us/worksheets.

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