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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:  

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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
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
EDDIE SAYS
21 - 17 = 4
---- OR ----

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