# Multiplication Number Talk: Third Grade

Grade 3 / Math / Tch DIY
CCSS: Math.3.OA.B.5 Math.3.NBT.A.3

Common Core State Standards

 Math Math 3 Grade 3 OA Operations & Algebraic Thinking B Understand properties of multiplication and the relationship between multiplication and division 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.) Download Common Core State Standards (PDF 1.2 MB)

Common Core State Standards

 Math Math 3 Grade 3 NBT Numbers & Operations in Base Ten A Use place value understanding and properties of operations to perform multi-digit arithmetic 3 Multiply one-digit whole numbers by multiples of 10 in the range 10-90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations. Download Common Core State Standards (PDF 1.2 MB)

Number Talks encourage students to think flexibly about the operations and their properties as they solve problems mentally.

Tch visited Kristin's Gray's school. Watch the video.