Grade 4 · Number and Operations in Base Ten

CCSS.MATH.CONTENT.4.NBT.B.5

Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

Read this standard on the official Common Core site

Lessons that teach this standard

• Multi-Digit Multiplication: The Standard Algorithm

  How to multiply multi-digit numbers with the standard algorithm, why the second row is shifted one place left, and how to check an answer by estimating first.