Solve multiplication problems: using distributive property

Solve multiplication problems: using distributive property

In this lesson you will learn how to solve multiplication problems by using the distributive property.

ADDITIONAL MATERIALS

General resource https://docs.google.com/document/d/1A2wX92gR17iNaRluISDKRzRtB-F3bbnL/edit?usp=drivesdk&ouid=103344685123288532282&rtpof=true&sd=true

STANDARDS

VA.PFA.3.17 The student will create equations to represent equivalent mathematical relationships.

CCSS.3.OA.B.5 Apply properties of operations as strategies to multiply and divide. Students need not use formal terms for these properties. 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.)

FL.MAFS.3.OA.2.5 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.)

TEKS.6.7.D generate equivalent expressions using the properties of operations: inverse, identity, commutative, associative, and distributive properties.