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Common Core · Grade 3 · Maths · Operations & Algebraic Thinking

9 curriculum codes

Maths

Operations & Algebraic Thinking

CCSS.MATH.CONTENT.3.OA.A.1 — opens in a new tab

Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.

8 resources

CCSS.MATH.CONTENT.3.OA.A.2 — opens in a new tab

Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each. For example, describe a context in which a number of shares or a number of groups can be expressed as 56 ÷ 8.

8 resources

CCSS.MATH.CONTENT.3.OA.A.3 — opens in a new tab

Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

17 resources

CCSS.MATH.CONTENT.3.OA.A.4 — opens in a new tab

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 = ?

15 resources

CCSS.MATH.CONTENT.3.OA.B.5 — opens in a new tab

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.)

10 resources

CCSS.MATH.CONTENT.3.OA.B.6 — opens in a new tab

Understand division as an unknown-factor problem. For example, find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8.

10 resources