# Third Grade Math Worksheets

Free Printable Worksheets from WorksheetsPlus.com
Correlated to the Common Core State Standards for Mathematics

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### Operations and Algebraic Thinking 3.OA

#### Represent and solve problems involving multiplication and division.

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each
Multiplication Concept

Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities
Multiplication Applications
Division Word Problems Worksheets

Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = ? ÷ 3, 6 × 6 = ?.
Relationship Between Multiplication and Division: Pictures
Relationship Between Multiplication and Division: Triple Puzzles
Multiplication and Division Relationship: Unknown Numbers

#### Understand properties of multiplication and the relationship between multiplication and division.

Apply properties of operations as strategies to multiply and divide. Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)
Multiplication Properties: Commutative Pictures
Multiplication Properties: Commutative and Associative
Multiplication Properties: Distributive
Recognizing Multiplication Properties
Using the Multiplication Properties

Understand division as an unknown-factor problem. For example, find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8.
Relationship Between Multiplication and Division: Pictures
Relationship Between Multiplication and Division: Triple Puzzles
Multiplication and Division Relationship: Unknown Numbers

#### Multiply and divide within 100.

Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.
Multiplication Flash Cards
Division Flash Cards

### Number and Operations—Fractions 3.NF

#### Develop understanding of fractions as numbers.

Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
Unit Fractions Worksheet
Fractions: Equal Parts
Numerator and Denominator Worksheet

Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
Equivalent Fractions Worksheet
Money Fractions Worksheets