The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Multiply Two Rounded Numbers

In this worksheet, students use their rounding skills to round numbers to the nearest 10 before multiplying the numbers together.

'Multiply Two Rounded Numbers' worksheet

Key stage:  KS 2

Curriculum topic:  Number: Multiplication and Division

Curriculum subtopic:  Multiply Numbers to Four Digits

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

In this worksheet you will learn to round numbers to the nearest ten to estimate the answer to a multiplication.

 

Example

Estimate the answer by rounding the numbers to the nearest 10 before multiplying.

 

78 x 43
A
 x 
B
 = 
C


Answer

 

78 x 43
80
 x 
40
 = 
3200

 

Remember, to work out 80 x 40, we work out 8 x 4 x 10 x 10 = 32 x 100 = 3200

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

67 x 32
A
 x 
B
 = 
C

 


Column A

Column B

A
70
B
30
C
2100

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

87 x 43
A
 x 
B
 = 
C


Column A

Column B

A
3600
B
40
C
90

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

22 x 32
A
 x 
B
 = 
C


Column A

Column B

A
30
B
20
C
600

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

69 x 16
A
 x 
B
 = 
C


Column A

Column B

A
1400
B
70
C
20

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

37 x 66
A
 x 
B
 = 
C


Column A

Column B

A
2800
B
70
C
40

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

78 x 95
A
 x 
B
 = 
C


Column A

Column B

A
8000
B
80
C
100

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

87 x 82
A
 x 
B
 = 
C


Column A

Column B

A
7200
B
90
C
80

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

69 x 49
A
 x 
B
 = 
C


Column A

Column B

A
70
B
50
C
3500

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

35 x 74
A
 x 
B
 = 
C


Column A

Column B

A
70
B
2800
C
40

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

31 x 36
A
 x 
B
 = 
C


Column A

Column B

A
40
B
1200
C
30
  • Question 1

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

67 x 32
A
 x 
B
 = 
C

 


CORRECT ANSWER

Column A

Column B

A
70
B
30
C
2100
  • Question 2

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

87 x 43
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
90
B
40
C
3600
  • Question 3

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

22 x 32
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
20
B
30
C
600
  • Question 4

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

69 x 16
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
70
B
20
C
1400
  • Question 5

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

37 x 66
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
40
B
70
C
2800
  • Question 6

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

78 x 95
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
80
B
100
C
8000
  • Question 7

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

87 x 82
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
90
B
80
C
7200
  • Question 8

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

69 x 49
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
70
B
50
C
3500
  • Question 9

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

35 x 74
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
40
B
70
C
2800
  • Question 10

Estimate the answer by rounding the numbers to the nearest 10 before multiplying to find C.

31 x 36
A
 x 
B
 = 
C


CORRECT ANSWER

Column A

Column B

A
30
B
40
C
1200
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Start your £1 trial

Start your trial for £1