Fraction of a Set Worksheets for 3rd Grade

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Grade 3MathFractionsCCSS 3.NF.A.1

Skill: Finding a unit fraction of a set of objects

Preview of the Fraction of a Set printable worksheet
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Teaching tips and what to try next

Fits third graders who can shade equal parts of a shape in Identify Fractions With Shapes and are ready to split a set of objects. Counting the whole first, then making equal piles, keeps the unit fraction concrete. Number-only practice is next in Fractions of a 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

A fraction names equal parts of a whole, and a set of objects can be that whole. One third of 12 buttons is 4 buttons, because the 12 buttons split into 3 equal groups of 4. Third graders are expected to understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts, and this third grade worksheet practices that with sets.

The page has eight pictured sets of circles. Under each set, children find a unit fraction of the set, such as one half, one third, one fourth, one fifth or one sixth. The total number of circles always divides evenly by the denominator, so the answer is a whole number of objects. Children write how many objects make up that fractional part. Each of the ten versions has new sets and its own answer key.

How to use it: start by counting the whole set together. Then ask how many equal groups the denominator asks for, and circle those groups lightly in pencil before writing the answer. Real objects, such as 12 crayons shared into 4 equal piles, make the same idea concrete.

The answer key shows how many objects are in each fractional part. For fractions of shaded shapes instead of sets, try our Identify Fractions With Shapes worksheet. For finding a fraction of a number without pictures, try our Fractions of a Number worksheet.