# Multiplying Decimals by Whole Numbers

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There are four sets of Multiply Decimal Worksheets:
Multiply Decimals by 10, 100, 1000
Multiply Decimals by Powers of 10
Multiply Decimals by Whole Numbers
Multiply Decimals by Decimals

Examples, solutions, videos, and worksheets to help Grade 5 students learn how to multiply decimals by whole numbers. Include multiplying decimals word problems.

### How to multiply a decimal by a whole number?

To multiply a decimal by a whole number, you can follow these steps:
Step 1: Treat the decimal number as a whole number and multiply without considering the decimal point.
Step 2: Count the total number of decimal places in the original decimal number.
Step 3: Place the decimal point that same number of places from the right in the product.

For example, let’s multiply 2.5 by 4.
Step 1: Treat the decimal number as a whole number and multiply without considering the decimal point. 25 × 4 = 100
Step 2: The original decimal number, 2.5, has one decimal place.
Step 3: Placing the decimal point one place from the right in the product. 2.5 × 4 = 10.0

Have a look at this video if you need to review how to multiply decimals by whole numbers.

Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Multiply Decimals by Whole Numbers Worksheets.

There are 2 sets of multiply decimals by whole numbers worksheets:

• Multiply decimals by whole numbers (Mental Math)
• Multiply decimals by whole numbers (Long Multiplication)

### More Multiply Decimals by Whole Numbers Worksheets

Printable
Multiply Decimals by Whole Numbers Worksheet #1 (Mental Math)
Multiply Decimals by Whole Numbers Worksheet #2

Online or Interactive
Multiply Decimals by Whole Number (mental math)
Multiply Decimals by 10, 100 or 1000 Worksheet
Multiply Decimals by powers of 10

Multiply Decimals by Whole Numbers Word Problems

1. Pedro is building a spice rack with 4 shelves that are each 0.55 meter long. At the hardware store, Pedro finds that he can only buy the shelving in whole meter lengths. Exactly how many meters of shelving does Pedro need? Since he can only buy whole number lengths, how many meters of shelving should he buy?

He needs exactly 2.2 meters.
He would need to buy 3 meters.

2. Marcel rides his bicycle to school and back on Tuesdays and Thursdays. He lives 3.62 kilometers away from school. Exactly how many kilometers he bikes in the two days.
3. The poetry club had its first bake sale, and they made \$79.35. The club members are planning to have 4 more bake sales. How much will they earn in total if we make the same amount at each bake sale?
4. YiTing weighs 8.3 kg. Her older brother is 5 times as heavy as her. How much does her older brother’s weight in kg?
5. Tim is painting his storage shed. He buys 4 gallons of white paint and 3 gallons of blue paint. If each gallon of white paint costs \$15.72 and each gallon of blue paints is \$21.87, how much will Tim spend in all on paint?
6. Ribbon is sold at 3 yards for \$6.33. Jackie bought 24 yards of ribbon for a project. How much did she pay?

More Printable Worksheets

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. 