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Lesson Plans and Worksheets for Grade 3
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More Lessons for Grade 3
Common Core For Grade 3
Videos, examples, solutions, and lessons to help Grade 3 students learn to 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.)
Common Core: 3.OA.5
Distributive Property
Commutative Property of Multiplication
The order of numbers does not matter when multiplying.
Associative Property of Multiplication
The sum or product stays the same when grouping of addends or factors is changed.
Distributive Property
When multiplying a factor and a sum, you can distribute the factor across the addition.
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