6th 4.1 Multiplying Decimals by Whole Numbers

6th 4.1 Multiplying Decimals by Whole Numbers

by Autumn Healy

​How to multiply decimals...

​Helpful tip

​I like to put the longer number on the top for multiplying decimals.

​

​Look at the example to the right. In the problem on the right, the longer number is the first factor listed. In the problem on the left, the numbers have the same amount of digits, so they're just lined up evenly.

​

Multiple Choice

45.1 x 7

• 31.57
• 315.7
• 3,157
• 3.157

Multiple Choice

2.5 x 2 =

• 5.2

• 5

• 3

• 6

Multiple Choice

9.3 x 6 =

• 55.6

• 56.9

• 55

• 55.8

Multiple Choice

3.64 x 6 =

• 21.84

• 21

• 21.35

• 21.846

Multiple Choice

 Jackie rode her bike around Capaha Park last week. The trail is 8.54 miles long. If she rode around the park 4 times last week, how many miles did she travel in all?

• 3.41 miles
• 8.54 miles
• 34.16 miles
• 341.6 miles

Multiple Choice

Leon wrote the product below without a decimal point. Where should he place the decimal point?

6.18 × 3 = 1854

• 1.854

• 185.4

• 0.1854

• 18.54

Multiple Choice

Four pieces of ribbon are each 0.12 meter long. Sandra multiplies 4 × 0.12 to find the total length, in meters. What is the product?

• 0.48

• 0.048

• 4.08

• 4.8

Multiple Choice

5.04 x 8

• 401.2

• 39.32

• 40.32

• 44.5

Multiple Select

12.49 x 3

Hint: there is more than one correct answer listed below. Please select all correct answers.

• 3747.0

• 37.47

• 3.747

• 37.470

• 0.3747

Multiple Choice

Fabric costs $9.99 a yard. Isabella buys 4 yards of red fabric and 3 yards of black fabric. How much does Isabella spend on fabric?

• $29.97

• $39.96

• $69.83

• $69.93

Multiple Choice

2.6 x 10

• .26
• .026
• 26
• 260

Multiple Choice

3.7 x 1000

• 3700
• 37.00
• 370.0

Multiple Choice

0.0186 x 92

• 1.7112
• 17.112
• 171.22

Multiple Choice

Shelia made 57 beaded necklaces. If she sells the necklaces for $11.25 each, how much will she earn?

• $45.75
• $68.25
• $527.95
• $641.25