Multiplying Using Arrays

The video tutorial explains how to solve multiplication problems using an array model by decomposing factors. It provides step-by-step examples for multiplying numbers like 5 * 12, 12 * 15, and 10 * 725. The process involves drawing a rectangle, decomposing factors into tens and ones, multiplying each part, and summing the partial products to find the final result. This method simplifies multiplication with multi-digit numbers.

What is the first step in solving 5 * 12 using an array model?

• Draw a square

• Draw a triangle

• Draw a rectangle

• Draw a circle

When decomposing 12 in the multiplication 5 * 12, what are the two parts?

• 10 and 2

• 8 and 4

• 5 and 7

• 6 and 6

In the multiplication of 12 * 15 using an array model, what is the partial product of 10 * 10?

• 150

• 200

• 100

• 50

How many sections should the rectangle be divided into when multiplying 10 * 725 using an array model?

• 5 sections

• 4 sections

• 3 sections

• 2 sections

What is the final product of 10 * 725 using the array model?

• 7500

• 7000

• 7250

• 7200