3rd grade Unit 3 Multiplication and Division properties
learn
distributive property:
http://studyjams.scholastic.com/studyjams/jams/math/addition-subtraction/prop-of-addition.htmhttp://studyjams.scholastic.com/studyjams/jams/math/multiplication-division/distrib-property.htm
distributive property:
http://studyjams.scholastic.com/studyjams/jams/math/addition-subtraction/prop-of-addition.htmhttp://studyjams.scholastic.com/studyjams/jams/math/multiplication-division/distrib-property.htm
· AKS: 5.OA.5 apply commutative, associative, and distributive properties as strategies to multiply and divide (e.g., If 6 x 4 = 24 is known, then 4 x 6 = 24 is also known (commutative property of multiplication); 3 x 5 x 2 can be found by 3 x 5 = 15, then 15 x 2 = 30, or by 5 x 2 = 10, then 3 x 10 = 30 (Associative property of multiplication), knowing that 8 x 5 = 40 and 8 x 2 = 16, then one can find 8 x 7 as 8 x (5 + 2) = (8 x 5) + (8 x 2) = 40 + 16 = 56 (Distributive Property). Students need not use formal terms for these properties.
· AKS: 6.OA.6 understand division as an unknown-factor problem (e.g., find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8)
AKS: 7.OA.7 fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 x 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)
· AKS: 6.OA.6 understand division as an unknown-factor problem (e.g., find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8)
AKS: 7.OA.7 fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 x 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)