First Year maths · J.2 · Add and subtract integers
Add integers with different signs
Use the number line, or think about the signs: same signs add and keep the sign, different signs subtract.
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See worked examples
Evaluate: −8 + 12
Answer: 4
Evaluate: 7 + (−6)
Answer: 1
Evaluate: 8 + (−2)
Answer: 6
Tip: Use the number line, or think about the signs: same signs add and keep the sign, different signs subtract.
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