Decimal Operations

Multiplying and Dividing Decimals

You can multiply decimals using the same strategies you use to multiply whole numbers.

What is 0.9 x 3?

0.9 1 placex 3 0 places

2.7 Count 1 place from the right to place thedecimal point.

To place the decimal point in the product,count the total number of digits after the decimal point in each factor.

Then, count in that many places from theright of the product to place the decimal point.

Let’s try one together.8 x 0.6 =

0.6 1 placex 8 0 place4.8 1 place over

Let’s practice4.3 x 5 7.2 X 3.4

3.2 X 17.6 7 X 0.4

Let’s try some word problems now.One cosmonaut spends 80 days in space. He spends 0.4 of

those days in the ISS. How many days does he spend in the ISS?

Great job with that one try this one.Sophia runs 0.8 of a mile on Monday, Wednesday, Thursday,

and Saturday. She does not run any other days during the week. How many miles does she run in 1 week?

Try this one on your own. Then we’ll work it together.

Miguel purchased 1.8 pounds of bananas at $1.25 a pound. How much did Miguel pay for his bananas?