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Divide Decimals and Estimate the Answer (1)

In this worksheet, students round two decimals to the nearest whole numbers before subtracting them.

'Divide Decimals and Estimate the Answer (1)' worksheet

Key stage:  KS 2

Curriculum topic:  Number: Fractions, Decimals and Percentages

Curriculum subtopic:  Solve Rounding Problems

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

We can estimate the answers by first rounding both decimals to the nearest whole numbers and then finding the difference between them.

 

Example:

45.7 - 16.4 can be estimated by rounding each number to the nearest whole numbers 46 - 16

= 30

 

 

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

52.8 - 12.8  =   ____  -  ____  =   ____

 

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

35.3 - 28.6  =   ____  -  ____  =   ____

 Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

43.7 - 14.9  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

84.7 - 37.2  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

66 - 12.1  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

87.6 - 36.4  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

25.6 - 19.8  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

41.2 - 10.2  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

30.6 - 13  =   ____  -  ____  =   ____

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

20.7 - 17.2  =   ____  -  ____  =   ____

  • Question 1

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

52.8 - 12.8  =   ____  -  ____  =   ____

CORRECT ANSWER
53
13
40
  • Question 2

 

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

35.3 - 28.6  =   ____  -  ____  =   ____

CORRECT ANSWER
35
29
6
  • Question 3

 Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

43.7 - 14.9  =   ____  -  ____  =   ____

CORRECT ANSWER
44
15
29
  • Question 4

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

84.7 - 37.2  =   ____  -  ____  =   ____

CORRECT ANSWER
85
37
48
  • Question 5

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

66 - 12.1  =   ____  -  ____  =   ____

CORRECT ANSWER
66
12
54
  • Question 6

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

87.6 - 36.4  =   ____  -  ____  =   ____

CORRECT ANSWER
88
36
52
  • Question 7

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

25.6 - 19.8  =   ____  -  ____  =   ____

CORRECT ANSWER
26
20
6
  • Question 8

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

41.2 - 10.2  =   ____  -  ____  =   ____

CORRECT ANSWER
41
10
31
  • Question 9

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

30.6 - 13  =   ____  -  ____  =   ____

CORRECT ANSWER
31
13
18
  • Question 10

Estimate the answer to the subtraction by rounding to the nearest whole numbers first.

 

20.7 - 17.2  =   ____  -  ____  =   ____

CORRECT ANSWER
21
17
4
---- OR ----

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