Multiplying Decimals by Whole Numbers 6/9/25

What are decimals?

Numbers to the right of the decimal point

What is a product?

The answer to a multiplication problem

What is a factor?

Numbers you multiply to get another number

What does "annex zeros" mean?

Adding zeros to the beginning or end to help solve or line up place value

What is multiplication?

Repeated addition of equal groups

How is multiplying with decimals the same as multiplying whole numbers?

You still multiply digits, carry over, and add products

How is multiplying with decimals different from whole numbers?

You must place the decimal point in the product by counting decimal places

What is Step 1 in multiplying decimals?

Ignore the decimal and multiply as if with whole numbers

What is Step 2 in multiplying decimals?

Count decimal places in the decimal factor

What is Step 3 in multiplying decimals?

Place the decimal in the product the same number of places from the right

What should you do if place values don’t line up?

Annex zeros to hold the correct value

What is an example problem for multiplying decimals by whole numbers?

0.48 × 7

What do you do first when multiplying 0.48 × 7?

Ignore the decimal and multiply 48 × 7 = 336

How many decimal places are in 0.48?

2 decimal places

How do you place the decimal in the product 336?

Move 2 places from the right → 3.36

What is the final answer to 0.48 × 7?

3.36