# Subtract Positive and Negative Numbers (3)

In this worksheet, students subtract three positive and negative numbers.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:

### 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.

Work from left to right to get the answer.

Examples

15 - -21 - 5 = 15 + 21 - 5 = 36 - 5 = 31

-117 - -30 - -21= -117 + 30 + 21= -87 + 21= -66

Remember

-11 + 3

is the same as

3 + -11

which is the same as

3 - 11

which is -8

Work out:

35 - -4 - 5

26

-36

34

-34

Work out:

-5 - -34 - 12

17

-51

27

-41

Work out:

-15 - 14 - -29

29

0

1

-58

Work out:

35 - 14 - -24

33

-21

45

-3

Work out:

-15 - 67 - 19

101

-101

63

-63

Work out:

-15 - -49 - 39

-73

73

-103

-5

Work out:

-15 - -42 - -42

-15

-99

99

69

Work out:

15 - -55 - 17

-87

53

-57

23

Work out:

-8 - -120 - 128

-16

128

-256

0

Work out:

158 - -156 - -158

156

-156

472

160

• Question 1

Work out:

35 - -4 - 5

34
• Question 2

Work out:

-5 - -34 - 12

17
• Question 3

Work out:

-15 - 14 - -29

0
• Question 4

Work out:

35 - 14 - -24

45
• Question 5

Work out:

-15 - 67 - 19

-101
• Question 6

Work out:

-15 - -49 - 39

-5
• Question 7

Work out:

-15 - -42 - -42

69
• Question 8

Work out:

15 - -55 - 17

53
• Question 9

Work out:

-8 - -120 - 128

-16
• Question 10

Work out:

158 - -156 - -158

472
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