Multiplying Decimals Using the Number Line

The video tutorial explains how Amanda can calculate the total cost of buying 8 pencils at $0.12 each by using repeated addition, which is equivalent to multiplication. It demonstrates this concept using a number line, showing how to represent decimals and perform the calculation visually. The lesson concludes with a summary of the multiplication of decimals and whole numbers using repeated addition on a number line.

How much does each pencil cost at the school store?

• $0.15

• $0.20

• $0.12

• $0.10

What mathematical operation is used to find the total cost of 8 pencils?

• Multiplication

• Division

• Subtraction

• Addition

On a number line, how is the distance between each whole number divided?

• Into 10 parts

• Into 5 parts

• Into 15 parts

• Into 20 parts

What does each smaller part represent when a tenth is further divided on the number line?

• A hundredth

• A whole number

• A tenth

• A thousandth

What is the total cost of 8 pencils?

• $1.00

• $0.96

• $0.90

• $0.84