# Using a Calculator to Multiply by Decimal Numbers Between 0 and 1

In this worksheet, students use a calculator to multiply by decimal numbers between 0 and 1.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Calculators/Technology for Accuracy

Difficulty level:

### QUESTION 1 of 10

When you multiply any number by 1 it remains the same.

For example, 24 × 1 = 24      79 × 1 = 79     38.97 × 1 = 38.97

When you multiply a number by a decimal between 0 and 1 something surprising happens.

79 x 0.1 = 7.9

24 x 0.7 = 16.8

Multiplying by 0.1 is the same as dividing by 10.

Your answer is smaller than the number you are multiplying.

Now use your calculator to answer the following questions.

Multiply the number & write the answer.

487 × 0.2 =

Multiply the number & write the answer.

440 × 0.3 =

Multiply the number & write the answer.

380 × 0.6 =

Multiply the number & write the answer.

659 × 0.4 =

Multiply the number & write the answer.

159 × 0.5 =

Multiply the number & write the answer.

122 × 0.7 =

Multiply the number & write the answer.

125 × 0.1 =

Multiply the number & write the answer.

990 × 0.7 =

Multiply the number & write the answer.

37 × 0.2 =

Multiply the number & write the answer.

553 × 0.4 =
• Question 1

Multiply the number & write the answer.

487 × 0.2 =
97.4
• Question 2

Multiply the number & write the answer.

440 × 0.3 =
132
• Question 3

Multiply the number & write the answer.

380 × 0.6 =
228
• Question 4

Multiply the number & write the answer.

659 × 0.4 =
263.6
• Question 5

Multiply the number & write the answer.

159 × 0.5 =
79.5
• Question 6

Multiply the number & write the answer.

122 × 0.7 =
85.4
• Question 7

Multiply the number & write the answer.

125 × 0.1 =
12.5
• Question 8

Multiply the number & write the answer.

990 × 0.7 =
693
• Question 9

Multiply the number & write the answer.

37 × 0.2 =
7.4
• Question 10

Multiply the number & write the answer.

553 × 0.4 =
221.2
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