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Add Positive and Negative Numbers (3)

In this worksheet, students add together three positive and negative numbers.

'Add Positive and Negative Numbers (3)' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Remember the rules for adding two numbers.

 

Adding two positive numbers gives a positive answer.

Adding two negative numbers gives a negative answer.

 

Examples

15 + 21 = 36

-15 + -21 = -36

 

Adding a negative number is the same as subtracting the positive.

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

 

Examples

25 + -31 = 25 - 31 = -6

25 + -3 = 25 - 3 = 22

  

Adding three positive and negative numbers is done in stages using the rules above.

 

Examples

25 + -31 + -1 = 25 - 31 - 1 = -6 - 1 = -7

25 + -3 + 5 = 25 - 3 + 5 22 + 5 = 27

 

 

Work out:

35 + -4 + 2

41

-31

33

-39

Work out:

-5 + -14 + 7

18

-11

26

-12

Work out:

-25 + 4 + -6

15

-27

23

-35

Work out:

25 + 44 + -10

9

-29

59

-79

Work out:

-15 + 44 + -9

20

-38

-59

50

Work out:

-15 + -44 + 9

38

-20

68

-50

Work out:

-17 + -34 + 17

-51

34

-34

68

Work out:

69 + -143 + 143

-217

355

-83

69

Work out:

-38 + -100 + -45

-183

93

-138

183

Work out:

18 + -101 + 76

43

195

-7

-159

  • Question 1

Work out:

35 + -4 + 2

CORRECT ANSWER
33
  • Question 2

Work out:

-5 + -14 + 7

CORRECT ANSWER
-12
  • Question 3

Work out:

-25 + 4 + -6

CORRECT ANSWER
-27
  • Question 4

Work out:

25 + 44 + -10

CORRECT ANSWER
59
  • Question 5

Work out:

-15 + 44 + -9

CORRECT ANSWER
20
  • Question 6

Work out:

-15 + -44 + 9

CORRECT ANSWER
-50
  • Question 7

Work out:

-17 + -34 + 17

CORRECT ANSWER
-34
  • Question 8

Work out:

69 + -143 + 143

CORRECT ANSWER
69
  • Question 9

Work out:

-38 + -100 + -45

CORRECT ANSWER
-183
  • Question 10

Work out:

18 + -101 + 76

CORRECT ANSWER
-7
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