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Mathematics / Properties of Multiplication and Division

Mathematics / Properties of Multiplication and Division

3.OA.5. 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.)
3.OA.6. Understand division as an unknown-factor problem. For example, find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8.

Exercises
Exercises
• Properties of Multiplication and Division

Tags : Understand Identity, Commutative, Distributive and Associative properties of multiplication and division, determine unknown factors, word problems, find missing number in division and multiplication equations.

• Questions: 15