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  1. 11+
  2. Year 4
  3. decimals
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Multiply Decimals and Estimate the Answer

In this worksheet, students round decimals to the nearest whole numbers and then estimate the answer to a multiplication.

'Multiply Decimals and Estimate the Answer' worksheet

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Decimals

Difficulty level:  

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Worksheet Overview

QUESTION 1 of 10

In this worksheet children learn to round decimal numbers to the nearest whole numbers in order to estimate the answer to a multiplication.

For example -

Question -

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers

2.25x1.41
A
X
B
=
C

Answer -

2.25x1.41
2
x
1
=
2

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.43X5.1
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.43 to the nearest whole number and B will be 5.1...

Column A

Column B

A
5
B
7
C
35

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

8.45X6.28
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 8.45 to the nearest whole number and B will be 6.28...

Column A

Column B

A
6
B
8
C
48

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

9.93X3.19
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 9.93 to the nearest whole number and B will be 3.19...

Column A

Column B

A
3
B
30
C
10

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers..

5.83X2.75
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 5.83 to the nearest whole number and B will be 2.75...

Column A

Column B

A
6
B
3
C
18

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.15X1.2
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.15 to the nearest whole number and B will be 1.2...

Column A

Column B

A
1
B
7
C
7

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

3.27X1.12
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 3.27 to the nearest whole number and B will be 1.12...

Column A

Column B

A
3
B
1
C
3

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

9.08X2.47
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 9.08 to the nearest whole number and B will be 2.47...

Column A

Column B

A
18
B
9
C
2

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

1.8X1.71
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 1.8 to the nearest whole number and B will be 1.71...

Column A

Column B

A
4
B
2
C
2

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

5.33X4.68
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 5.33 to the nearest whole number and B will be 4.68...

Column A

Column B

A
5
B
25
C
5

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.17X2.3
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.17 to the nearest whole number and B will be 2.3...

Column A

Column B

A
2
B
14
C
7
  • ANSWERS
  • Question 1

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.43X5.1
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.43 to the nearest whole number and B will be 5.1...

CORRECT ANSWER

Column A

Column B

A
7
B
5
C
35
  • ANSWERS
  • Question 2

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

8.45X6.28
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 8.45 to the nearest whole number and B will be 6.28...

CORRECT ANSWER

Column A

Column B

A
8
B
6
C
48
  • ANSWERS
  • Question 3

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

9.93X3.19
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 9.93 to the nearest whole number and B will be 3.19...

CORRECT ANSWER

Column A

Column B

A
10
B
3
C
30
  • ANSWERS
  • Question 4

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers..

5.83X2.75
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 5.83 to the nearest whole number and B will be 2.75...

CORRECT ANSWER

Column A

Column B

A
6
B
3
C
18
  • ANSWERS
  • Question 5

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.15X1.2
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.15 to the nearest whole number and B will be 1.2...

CORRECT ANSWER

Column A

Column B

A
7
B
1
C
7
  • ANSWERS
  • Question 6

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

3.27X1.12
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 3.27 to the nearest whole number and B will be 1.12...

CORRECT ANSWER

Column A

Column B

A
3
B
1
C
3
  • ANSWERS
  • Question 7

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

9.08X2.47
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 9.08 to the nearest whole number and B will be 2.47...

CORRECT ANSWER

Column A

Column B

A
9
B
2
C
18
  • ANSWERS
  • Question 8

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

1.8X1.71
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 1.8 to the nearest whole number and B will be 1.71...

CORRECT ANSWER

Column A

Column B

A
2
B
2
C
4
  • ANSWERS
  • Question 9

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

5.33X4.68
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 5.33 to the nearest whole number and B will be 4.68...

CORRECT ANSWER

Column A

Column B

A
5
B
5
C
25
  • ANSWERS
  • Question 10

Estimate the answer to the multiplication by first rounding both decimals to the nearest whole numbers.

7.17X2.3
A
X
B
=
C

Remember to put your answers in the same sequence as the question.

For example, A will be 7.17 to the nearest whole number and B will be 2.3...

CORRECT ANSWER

Column A

Column B

A
7
B
2
C
14
---- OR ----

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