Curriculum>Grade 4> Module 2>Topic G: Multiplication of Two-Digit by Two-Digit Numbers

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Learn about the distributive property by using an area model to multiply two 2-digit numbers when one factor is a multiple of 10. Break the rectangle into two smaller rectangles, one of which has a length multiple of 10. Then add the two areas together

A. Multiply a 2-digit number by 10

B. Identify a round number as a multiple of 10

C. Solve a word problem two different ways by regrouping factors

D. Multiply by splitting a round number into a multiple of 10 and regrouping factors based on a disk model (multiply by 10 last)

E. Multiply by splitting a round number into a multiple of 10 and regrouping factors based on a disk model (multiply by 10 first)

F. Multiply by splitting a round number into a multiple of 10 and regrouping factors (Level 1)

G. Multiply by splitting a round number into a multiple of 10 and regrouping factors (Level 2)

I. Multiply to find the area of a rectangle using the distributive property

J. Multiply using partial products and the standard algorithm (one round number)

K. Multiply to find the area of a rectangle using the distributive property and the standard algorithm

L. Multiply using partial products and the standard algorithm

M. Multiply using the standard algorithm (one round number)

N. Multiply using the standard algorithm with regrouping (one round number)

O. Multiply using partial products and the standard algorithm with regrouping (Part 1)

P. Multiply using partial products and the standard algorithm with regrouping (Part 2)

Q. Multiply using the standard algorithm (one round number)

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