Class 7 maths · J.1 · Add and subtract integers
Add integers with the same sign
Use the number line, or think about the signs: same signs add and keep the sign, different signs subtract.
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Evaluate: −12 + (−1)
Answer: -13
Evaluate: 1 + 10
Answer: 11
Evaluate: 7 + 11
Answer: 18
Tip: Use the number line, or think about the signs: same signs add and keep the sign, different signs subtract.
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