# Mental Addition and Subtraction of Positive and Negative Numbers

In this worksheet, students add and subtract positive and negative numbers in their heads.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Four Operations for All Numbers

Difficulty level:

### QUESTION 1 of 10

Examples

(-9) - (-8) = (-9) + 8 = 8 - 9 = -1

82 + (-6) = 82 - 6 = 76

(-5) - 5 = -10

(-89) - (-15) = _______

(-80) + (-43) = _______

(-7) - (-88) = _______

(-80) - (-32) = _______

(-60) + (-29) = _______

(-6) - (-14) = _______

(-91) - (-29) = _______

(-18) + (-84) = _______

(-87) + (-15) = _______

(-9) + (-71) = _______

• Question 1

(-89) - (-15) = _______

-74
• Question 2

(-80) + (-43) = _______

-123
• Question 3

(-7) - (-88) = _______

81
• Question 4

(-80) - (-32) = _______

-48
• Question 5

(-60) + (-29) = _______

-89
• Question 6

(-6) - (-14) = _______

8
• Question 7

(-91) - (-29) = _______

-62
• Question 8

(-18) + (-84) = _______

-102
• Question 9

(-87) + (-15) = _______

-102
• Question 10

(-9) + (-71) = _______

-80
---- OR ----

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