Question

EXERCISE 6

1. Which is warmer: -5 °C or -7 °C?
2. By how many degrees is 29 °C warmer than -7 °C? 36
3. By how many degrees is -2 °C colder than 7 °C? degres
4. Suppose the temperature at midday was 21 °C. By sunset it had dropped by 9 °C. What was the temperature at sunset? Hlw-.
5. The temperature on a cold winter's day in Vancouver, Canada was -4 °C. It increased by 6 °C by midday. What was the midday temperature?
6. The following day in Vancouver started out at -1 °C and got four degrees colder by nightfall. What was the temperature at nightfall?
7. Two days later, the temperature started out at 2 °C, but fell nine degrees after it snowed. What was the temperature after it had snowed? ad calculations with numbers​

Answer 1

1. -7, if you plot it on a number line, -7 is farther down.

2. You already solved this

3. 7 - (-2) = 7+2 = 9

4. 21 - 9 = 12 degrees C

5. 2 degrees C

6. -5 degrees C (-1 - 4)

7. 2 - 9 = -7 degrees C