Multiplication Area Models (2)

Front

What is an area model in multiplication?

Back

An area model is a visual representation of multiplication that breaks down numbers into their place values to show how to multiply them using rectangles.

Tags

CCSS.4.NBT.B.5

Front

How do you represent 38 X 16 using an area model?

Back

You can break it down into (30 + 8) and (10 + 6) and create a grid to find the partial products: 30*10, 30*6, 8*10, 8*6.

Tags

CCSS.4.NBT.B.5

Front

What are partial products?

Back

Partial products are the results of multiplying each part of the numbers in a multiplication problem before adding them together to get the final product.

Tags

CCSS.4.NBT.B.5

Front

Calculate the partial products for 38 X 16.

Back

The partial products are 300 (30*10) + 180 (30*6) + 80 (8*10) + 48 (8*6) = 608.

Tags

CCSS.4.NBT.B.5

Front

What is the correct way to express 53 X 82 using an area model?

Back

Break it down into (50 + 3) and (80 + 2) and calculate the partial products: 4000 (50*80) + 240 (50*2) + 240 (3*80) + 6 (3*2).

Tags

CCSS.4.NBT.B.5

Front

What is the area model for 26 X 78?

Back

Break it down into (20 + 6) and (70 + 8) and calculate the partial products: 1400 (20*70) + 420 (20*8) + 420 (6*70) + 48 (6*8).

Tags

CCSS.4.NBT.B.5

Front

How do you find the total area in an area model?

Back

Add all the partial products together to find the total area, which represents the final product of the multiplication.

Tags

CCSS.4.NBT.B.5

Front

What is the area model for 23 X 47?

Back

Break it down into (20 + 3) and (40 + 7) and calculate the partial products: 800 (20*40) + 140 (20*7) + 120 (3*40) + 21 (3*7).

Tags

CCSS.4.NBT.B.5

Front

Calculate the partial products for 72 X 59 using an area model.

Back

The partial products are 3500 (70*50) + 630 (70*9) + 100 (2*50) + 18 (2*9) = 4248.

Tags

CCSS.4.NBT.B.5

Front

What is the first step in using an area model for multiplication?

Back

The first step is to break down each number into its place values.

Tags

CCSS.4.NBT.B.5