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Subtract Positive and Negative Numbers (2)

In this worksheet, students subtract positive and negative numbers.

'Subtract Positive and Negative Numbers (2)' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Subtracting a negative number is the same as adding the positive.

The answer may be positive or negative depending on the size of the numbers.

 

Examples

15 - -21 = 15 + 21 = 36

-117 - -30 = -117 + 30 = -87

 

Remember

-11 + 3

is the same as

 3 + -11

which is the same as

 3 - 11

which is -8

Work out:

35 - -4

39

-31

31

-39

Work out:

-5 - -34

39

-39

29

-29

Work out:

-15 - 14

1

-1

29

-29

Work out:

35 - 14

21

-21

9

-9

Work out:

-15 - 67

-82

52

-52

82

Work out:

-15 - -49

64

-64

34

-34

Work out:

-15 - -42

27

57

-57

-27

Work out:

15 - -55

-40

70

-70

40

Work out:

-8 - -120

-112

128

-128

112

Work out:

158 - -156

2

314

-314

-2

  • Question 1

Work out:

35 - -4

CORRECT ANSWER
39
EDDIE SAYS
Two minus' make a positive 35 + 4
  • Question 2

Work out:

-5 - -34

CORRECT ANSWER
29
EDDIE SAYS
Two negatives make a positive -5 + 34
  • Question 3

Work out:

-15 - 14

CORRECT ANSWER
-29
EDDIE SAYS
These two negatives do not affect each other as they are not together
  • Question 4

Work out:

35 - 14

CORRECT ANSWER
21
EDDIE SAYS
This can just be done without thinking about multiple signs
  • Question 5

Work out:

-15 - 67

CORRECT ANSWER
-82
EDDIE SAYS
These two negatives do not affect each other as they are not together
  • Question 6

Work out:

-15 - -49

CORRECT ANSWER
34
EDDIE SAYS
Two negatives make a positive -15 + 49
  • Question 7

Work out:

-15 - -42

CORRECT ANSWER
27
EDDIE SAYS
Twp negatives maje a positive -15 + 42
  • Question 8

Work out:

15 - -55

CORRECT ANSWER
70
EDDIE SAYS
Two negatives make a positive 15 + 55
  • Question 9

Work out:

-8 - -120

CORRECT ANSWER
112
EDDIE SAYS
Two negatives make a positive -8 + 120
  • Question 10

Work out:

158 - -156

CORRECT ANSWER
314
EDDIE SAYS
Two negatives make a positive 158 + 156
---- OR ----

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