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Round Numbers to the Nearest Ten

In this worksheet, students round numbers to the nearest 10 before multiplying to find an estimated answer.

'Round Numbers to the Nearest Ten' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Rounding for Answers/Accuracy

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet, round numbers to the nearest ten to estimate the answer to multiplication problems.

 

Example

 

Question:

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

*Remember to round down if the ones are 1, 2, 3 or 4. If the ones are 5, 6, 7, 8 or 9 round up!

 

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
30
B
2100
C
70

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

59 x 32
A
 x 
B
 = 
C

 

 

Column A

Column B

A
60
B
1800
C
30

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

50 x 28
A
 x 
B
 = 
C

 


 

Column A

Column B

A
50
B
1500
C
30

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

37 x 20
A
 x 
B
 = 
C

 


 

Column A

Column B

A
40
B
800
C
20

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

73 x 30
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.

31 x 28
A
 x 
B
 = 
C

 

 

 

Column A

Column B

A
30
B
900
C
30

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

43 x 19
A
 x 
B
 = 
C

 

 

 

Column A

Column B

A
20
B
40
C
800

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

36 x 29
A
 x 
B
 = 
C

 

 

 

Column A

Column B

A
40
B
1200
C
30

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

97 x 83
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.

27 x 12
A
 x 
B
 = 
C

 

 

 

Column A

Column B

A
300
B
30
C
10
  • 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
EDDIE SAYS
Round 67 up to 70. Round 32 down to 30.
  • Question 2

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

59 x 32
A
 x 
B
 = 
C

 

 

CORRECT ANSWER

Column A

Column B

A
60
B
30
C
1800
EDDIE SAYS
Round 59 up to 60. Round 32 down to 30.
  • Question 3

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

50 x 28
A
 x 
B
 = 
C

 


 

CORRECT ANSWER

Column A

Column B

A
50
B
30
C
1500
EDDIE SAYS
50 stays the same. Round 28 up to 30.
  • Question 4

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

37 x 20
A
 x 
B
 = 
C

 


 

CORRECT ANSWER

Column A

Column B

A
40
B
20
C
800
EDDIE SAYS
Round 37 up to 40. 20 stays the same.
  • Question 5

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

73 x 30
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
70
B
30
C
2100
EDDIE SAYS
Round 73 rounds down to 70. 30 stays the same.
  • Question 6

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

31 x 28
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
30
B
30
C
900
EDDIE SAYS
Round 28 up to 30. Round 31 down to 30.
  • Question 7

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

43 x 19
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
40
B
20
C
800
EDDIE SAYS
Round 19 up to 20. Round 43 down to 40.
  • Question 8

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

36 x 29
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
40
B
30
C
1200
EDDIE SAYS
Round 36 up to 40. Round 29 up to 30.
  • Question 9

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

97 x 83
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
100
B
80
C
8000
EDDIE SAYS
Round 97 up to 100. Round 83 down to 80.
  • Question 10

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

27 x 12
A
 x 
B
 = 
C

 

 

 

CORRECT ANSWER

Column A

Column B

A
30
B
10
C
300
EDDIE SAYS
Round 27 up to 30. Round 12 down to 10.
---- OR ----

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