Multiplying Decimals by Whole Numbers

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.

• Multiplying 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
(Answers on the second page.)
Multiply Decimals by Whole Numbers Worksheet

Multiply Decimals by Whole Numbers Worksheet #1 (Mental Math)
Multiply Decimals by Whole Numbers Worksheet #2 (Mental Math)
Multiply Decimals by Whole Numbers Worksheet #3 (Mental Math)

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

Generated
Multiply Decimals by 10, 100 or 1000 Worksheet

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?
   • Show Answer

     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.
   • Show Answer

     14.48 kilometers

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?
   • Show Answer

     $396.75

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?
   • Show Answer

     41.5 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?
   • Show Answer

     $128.49

6. Ribbon is sold at 3 yards for $6.33. Jackie bought 24 yards of ribbon for a project. How much did she pay?
   • Show Answer

     $50.64

Related Lessons & Worksheets

Multiplying Decimals Lesson

More Printable Worksheets

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