Adding numbers with different signs and subtracting numbers
Answers are for parents and teachers.
1
Compute −18 + 11.
-7
2
Compute 6 − 15.
-9
3
Compute −7 − (−7).
0
4
The highest temperature is +12 °C and the lowest −8 °C. Find the range of temperature.
20
5
Compute −2 − 3 − (−5).
0