## Math

### HS Statistics & Probability

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3.OA.B.5
3.OA.B.5
Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 Ã 4 = 24 is known, then 4 Ã 6 = 24 is also known. (Commutative property of multiplication.) 3 Ã 5 Ã 2 can be found by 3 Ã 5 = 15, then 15 Ã 2 = 30, or by 5 Ã 2 = 10, then 3 Ã 10 = 30. (Associative property of multiplication.) Knowing that 8 Ã 5 = 40 and 8 Ã 2 = 16, one can find 8 Ã 7 as 8 Ã (5 + 2) = (8 Ã 5) + (8 Ã 2) = 40 + 16 = 56. (Distributive property.)
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3.OA.B.5
Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 Ã 4 = 24 is known, then 4 Ã 6 = 24 is also known. (Commutative property of multiplication.) 3 Ã 5 Ã 2 can be found by 3 Ã 5 = 15, then 15 Ã 2 = 30, or by 5 Ã 2 = 10, then 3 Ã 10 = 30. (Associative property of multiplication.) Knowing that 8 Ã 5 = 40 and 8 Ã 2 = 16, one can find 8 Ã 7 as 8 Ã (5 + 2) = (8 Ã 5) + (8 Ã 2) = 40 + 16 = 56. (Distributive property.)
3.OA.B.6
Understand division as an unknown-factor problem. For example, find 32 Ã· 8 by finding the number that makes 32 when multiplied by 8.