Adding and Subtracting Fractions Worksheets

Printable Adding and Subtracting Fractions Worksheet

Use this student worksheet for classroom practice or homework. Find a common denominator, add or subtract the numerators, then simplify. Give each answer in lowest terms. The answer key prints separately.

Same Denominator

#	Problem
1	1/5 + 2/5 =
2	3/8 + 2/8 =
3	5/6 - 1/6 =
4	7/10 - 3/10 =
5	2/9 + 4/9 =
6	5/12 + 5/12 =

Different Denominators

#	Problem
7	1/2 + 1/4 =
8	1/3 + 1/6 =
9	2/3 - 1/2 =
10	3/4 - 1/3 =
11	1/2 + 2/5 =
12	5/6 - 1/4 =

Mixed Numbers

#	Problem
13	1 1/4 + 2 1/4 =
14	2 1/3 + 1 1/3 =
15	3 3/4 - 1 1/4 =
16	4 1/2 - 1 1/3 =

Word Problems

#	Problem
17	A recipe uses 1/3 cup of flour, then 1/3 cup more. Total?
18	A board is 3/4 m long; you cut off 1/4 m. How much is left?
19	You read 2/5 of a book, then 1/5 more. How much have you read?
20	A jug holds 5/6 L; you pour out 1/2 L. How much is left?

Adding and Subtracting Fractions Answer Key

#	Answer
1	3/5
2	5/8
3	2/3
4	2/5
5	2/3
6	5/6
7	3/4
8	1/2
9	1/6
10	5/12
11	9/10
12	7/12
13	3 1/2
14	3 2/3
15	2 1/2
16	3 1/6
17	2/3 cup
18	1/2 m
19	3/5
20	1/3 L

A Few Worked Examples

Problem 3: $\frac{5}{6} - \frac{1}{6} = \frac{4}{6}$, which simplifies to $\frac{2}{3}$.

Problem 10: common denominator 12 - $\frac{9}{12} - \frac{4}{12} = \frac{5}{12}$.

Problem 16: $4\tfrac{1}{2} - 1\tfrac{1}{3} = 4\tfrac{3}{6} - 1\tfrac{2}{6} = 3\tfrac{1}{6}$.

Related Tools

Check any answer with the fraction calculator, or convert between forms with the mixed number calculator.