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Multiply a Whole Number by a Decimal Number

In this worksheet, students multiply a whole number by a simple decimal number.

'Multiply a Whole Number by a Decimal Number' worksheet

Key stage:  KS 2

Curriculum topic:  Maths and Numerical Reasoning

Curriculum subtopic:  Mixed Problems

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet, you must multiply a whole number by a decimal number.

 

Example

Multiply the following whole number by decimal numbers:

3 × 0.7 =
2.1

 

Step 1          Multiply 0.7 by 10 to get 7

Step 2          Multiply 3 x 7 = 21

Step 3          This is 10 times too big, so divide 21 by 10 to get 2.1

 

 

 

Work out the following mentally.

7 x 0.8 =
 

Work out the following mentally.

12 x 0.8 =
 

Work out the following mentally.

9 x 0.3 =
 

Work out the following mentally.

10 x 0.9 =
 

Work out the following mentally.

11 x 0.3 =
 

Work out the following mentally.

11 x 0.8 =
 

Work out the following mentally.

6 x 0.1 =
 

Work out the following mentally.

10 x 0.5 =
 

Work out the following mentally.

6 x 0.3 =
 

Work out the following mentally.

12 x 0.9 =
 
  • Question 1

Work out the following mentally.

7 x 0.8 =
 
CORRECT ANSWER
5.6
EDDIE SAYS
Step 1: Remove the decimal 7 x 8 = 56 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 2

Work out the following mentally.

12 x 0.8 =
 
CORRECT ANSWER
9.6
EDDIE SAYS
Step 1: Remove the decimal 12 x 8 = 96 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 3

Work out the following mentally.

9 x 0.3 =
 
CORRECT ANSWER
2.7
EDDIE SAYS
Step 1: Remove the decimal 9 x 3 = 27 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 4

Work out the following mentally.

10 x 0.9 =
 
CORRECT ANSWER
9
EDDIE SAYS
Step 1: Remove the decimal 10 x 9 = 90 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 5

Work out the following mentally.

11 x 0.3 =
 
CORRECT ANSWER
3.3
EDDIE SAYS
Step 1: Remove the decimal 11 x 3 = 33 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 6

Work out the following mentally.

11 x 0.8 =
 
CORRECT ANSWER
8.8
EDDIE SAYS
Step 1: Remove the decimal 11 x 8 = 88 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 7

Work out the following mentally.

6 x 0.1 =
 
CORRECT ANSWER
0.6
EDDIE SAYS
Step 1: Remove the decimal 6 x 1 = 6 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 8

Work out the following mentally.

10 x 0.5 =
 
CORRECT ANSWER
5
EDDIE SAYS
Step 1: Remove the decimal 10 x 5 = 50 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 9

Work out the following mentally.

6 x 0.3 =
 
CORRECT ANSWER
1.8
EDDIE SAYS
Step 1: Remove the decimal 6 x 3 = 18 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
  • Question 10

Work out the following mentally.

12 x 0.9 =
 
CORRECT ANSWER
10.8
EDDIE SAYS
Step 1: Remove the decimal 12 x 9 = 108 Step 2: Adjust your answer There is one number after a decimal place in the question, so there must be the same in the answer
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