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Addition and Subtracting: Checking Subtractions (1)

In this worksheet, students must use additions to check subtractions. Simple four-digit numbers are used.

'Addition and Subtracting: Checking Subtractions (1)' worksheet

Key stage:  KS 2

Curriculum topic:  Number: Addition and Subtraction

Curriculum subtopic:  Estimate Calculations and Check Answers

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

From any addition fact such as

1300 + 5200 = 6500

 

we can work out two subtraction facts.

 

Here we get

6500 - 1300 = 5200

and

6500 - 5200 = 1300

 

This is handy because we can use additions to check subtractions.

 

 

Example 1

Ahmed says that

2800 - 1100 =
1700

 

Use addition to check if he is right or wrong.

 

Answer

1700 + 1100 = 2800

 

So Ahmed is right.

 

 

Example 2

Bill says that

6500 - 3700 =
3200

 

Use addition to check if he is right or wrong.

 

Answer

3200 + 3700 = 6900 not 6500

 

So Bill is wrong.

Anna says that

5400 - 2200 =
3600

 

Use addition to check if she is right or wrong.

right

wrong

Ben says that

2300 - 1400 =
1100

 

Use addition to check if he is right or wrong.

right

wrong

Caroline says that

4700 - 1500 =
3200

 

Use addition to check if she is right or wrong.

right

wrong

Deep says that

3400 - 2100 =
1300

 

Use addition to check if he is right or wrong.

right

wrong

Emir says that

4100 - 1500 =
3400

 

Use addition to check if he is right or wrong.

right

wrong

Fatima says that

7600 - 3900 =
3500

 

Use addition to check if she is right or wrong.

right

wrong

Gill says that

5600 - 4700 =
900

 

Use addition to check if she is right or wrong.

right

wrong

Henry says that

5800 - 1600 =
4200

 

Use addition to check if he is right or wrong.

right

wrong

Indy says that

7600 - 4800 =
3800

 

Use addition to check if she is right or wrong.

right

wrong

Jamir says that

5060 - 3200 =
2140

 

Use addition to check if he is right or wrong.

right

wrong

  • Question 1

Anna says that

5400 - 2200 =
3600

 

Use addition to check if she is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
3600 + 2200 = 5800 not 5400
  • Question 2

Ben says that

2300 - 1400 =
1100

 

Use addition to check if he is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
1100 + 1400 = 2500 not 2300
  • Question 3

Caroline says that

4700 - 1500 =
3200

 

Use addition to check if she is right or wrong.

CORRECT ANSWER
right
EDDIE SAYS
3200 + 1500 = 4700
  • Question 4

Deep says that

3400 - 2100 =
1300

 

Use addition to check if he is right or wrong.

CORRECT ANSWER
right
EDDIE SAYS
1300 + 2100 = 3400
  • Question 5

Emir says that

4100 - 1500 =
3400

 

Use addition to check if he is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
3400 + 1500 = 4900 not 4100
  • Question 6

Fatima says that

7600 - 3900 =
3500

 

Use addition to check if she is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
3500 + 3900 = 7400 not 7600
  • Question 7

Gill says that

5600 - 4700 =
900

 

Use addition to check if she is right or wrong.

CORRECT ANSWER
right
EDDIE SAYS
900 + 4700 = 5600
  • Question 8

Henry says that

5800 - 1600 =
4200

 

Use addition to check if he is right or wrong.

CORRECT ANSWER
right
EDDIE SAYS
4200 + 1600 = 5800
  • Question 9

Indy says that

7600 - 4800 =
3800

 

Use addition to check if she is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
3800 + 4800 = 8600 not 7600
  • Question 10

Jamir says that

5060 - 3200 =
2140

 

Use addition to check if he is right or wrong.

CORRECT ANSWER
wrong
EDDIE SAYS
2140 + 3200 = 5340 not 5060
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