Fractions of a Number Worksheets for 4th Grade

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Grade 4MathFractionsCCSS 4.NF.B.4

Skill: Finding a fraction of a whole number, such as 2/3 of 12

Preview of the Fractions of a Number printable worksheet
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Teaching tips and what to try next

Best for fourth graders who know their division facts and understand that a fraction names equal parts of a whole. Drawing a bar, cutting it into as many boxes as the denominator, and writing the share in each box gives a picture that works for every problem. Then write these as multiplication in Multiplying Fractions by Whole Numbers, or revisit equal shares in Equivalent Fractions: Find the Missing Number.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Finding a fraction of a number, such as 3/4 of 20, is one of the most useful fraction skills a child can learn. It shows up in recipes, sharing, sale prices and test questions about groups. It also connects fractions to multiplication and division, which is exactly what fourth grade asks for. This fourth-grade worksheet gives eighteen problems that practice finding a fraction of a whole number.

The first six problems use unit fractions, such as 1/4 of 28, so children only need to divide. The other fourteen use fractions such as 3/5 or 5/8, so children divide by the denominator and then multiply by the numerator. Every fraction is in simplest form, the denominators are 2, 3, 4, 5, 6, 8 and 10, and each whole number divides evenly, so every answer is a whole number. Each of the ten versions has new problems and its own answer key.

How to use it: show one problem with counters. Put out 12 counters and split them into 3 equal groups to find 1/3 of 12. Then take 2 of those groups to find 2/3 of 12. After a few problems, children can skip the counters and say, "divide by the bottom, multiply by the top." Encourage a quick check: a fraction less than one whole should always give an answer smaller than the starting number.

The answer key gives every answer. To write the same idea as multiplication, try our Multiplying Fractions by Whole Numbers worksheet. For a refresher on what fractions mean, try our Identify Fractions With Shapes worksheet.