Signed integers
Overdrawn balances, below-zero temperatures and basement floors are negative integers. When adding, same signs pile up; different signs cancel out.
About: Signed integers
Overdrawn balances, below-zero temperatures and basement floors are negative integers. When adding, same signs pile up; different signs cancel out.
Worked examples
Calculate: −2 + (−4)
Answer: −6. Subtracting a number is the same as adding its opposite. Same signs add; different signs subtract and keep the sign of the larger absolute value. Result: −6.
Calculate: −22 − 19
Answer: −41. Subtracting a number is the same as adding its opposite. Same signs add; different signs subtract and keep the sign of the larger absolute value. Result: −41.
Calculate: −13 + (−5)
Answer: −18. Subtracting a number is the same as adding its opposite. Same signs add; different signs subtract and keep the sign of the larger absolute value. Result: −18.