Worksheets

Fractions of a Number Worksheets

Print practice finding a fraction of a whole number, like 2/3 of 12, with word problems and an answer key.

Printable Fractions of a Number Worksheet

Use this student worksheet for classroom practice or homework. To find a fraction of a number, divide by the denominator, then multiply by the numerator. The answer key prints separately.

Unit Fractions

#Problem
11/2 of 10 =
21/3 of 12 =
31/4 of 20 =
41/5 of 35 =
51/6 of 24 =
61/8 of 40 =

Other Fractions

#Problem
72/3 of 12 =
83/4 of 16 =
92/5 of 25 =
103/5 of 30 =
115/6 of 18 =
123/8 of 32 =

Larger Numbers

#Problem
131/2 of 86 =
142/3 of 90 =
153/4 of 100 =
164/5 of 60 =

Word Problems

#Problem
17A class of 30 has 2/3 girls. How many girls?
18A book has 120 pages; you read 1/4. How many pages?
19A $50 toy is 1/5 off. How much money is taken off?
20Of 28 students, 3/4 passed. How many passed?

Fractions of a Number Answer Key

#Answer
15
24
35
47
54
65
78
812
910
1018
1115
1212
1343
1460
1575
1648
1720
1830
1910
2021

A Few Worked Examples

Problem 7: 23 of 12=(12÷3)×2=4×2=8\tfrac{2}{3}\ \text{of}\ 12 = (12 \div 3) \times 2 = 4 \times 2 = 8.

Problem 11: 56 of 18=(18÷6)×5=3×5=15\tfrac{5}{6}\ \text{of}\ 18 = (18 \div 6) \times 5 = 3 \times 5 = 15.

Problem 17: 23 of 30=(30÷3)×2=20\tfrac{2}{3}\ \text{of}\ 30 = (30 \div 3) \times 2 = 20 girls.

Check answers with the fraction calculator, or compare fractions and percents with the percentage calculator.