Add and subtract integers
Add and subtract integers
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Work out the integer expression.
(-3) + 5 =
What does this generator do?
The generator picks two numbers in [−20, 20] and an operation + or −. Negative numbers are in parentheses so you do not mix signs with operators.
How to solve it
Rules: a + (−b) = a − b. a − (−b) = a + b. When adding numbers with different signs, take the difference of absolute values and keep the sign of the larger.
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