Review Using negative number and add, subtract

Here are six temperatures, in degrees Celsius.

6 ,−10 , 5, −4, 0, 2

Write them in order, starting with the lowest.

Luigi recorded the temperature in his garden at different times of the same day.When was temperature the lowest?

What was the difference in temperature between 06 00 and 12 00?

What was the temperature difference between 09 00 and 21 00?

At midnight the temperature was 5 degrees lower than it was at 21 00.

What was the temperature at midnight?

−2 + 5

−8 + 2

−10 + 7

−3 + 4 + 5

−6 + 1 + 5