Negative numbers test questions

1

The heating in Bruce's house switches on automatically when the outside temperature drops to \(-5^{o}C\).

One day last winter the outside temperature was \(3^{o}C\).

Calculate the drop in temperature from there to when the heating switched on automatically.

2

When an aircraft leaves Prestwick Airport the outside temperature is \(12^{o}C\).

The aircraft climbs to \(10,000\) metres and the outside temperature is \(-50^{o}C\).

Find the difference between these temperatures.

3

Derek compared the temperatures in the Sahara Desert and the North Pole.

The temperature in the Sahara Desert was \(32^{o}C\).

The temperature at the North Pole was \(46^{o}C\) less than the temperature in the Sahara Desert.

What was the temperature at the North Pole?

4

One day last February, Eleana compared the temperature in Edinburgh with the temperature in Montreal.

The temperature in Edinburgh was \(14^{o}C\).

The temperature in Montreal was \(-15^{o}C\).

Find the difference between these temperatures.

5

In July, the average temperature in Anchorage, Alaska is \(9^{o}C\).

By January the average temperature has fallen by \(26^{o}C\).

What is the average temperature in Anchorage in January?

6

Find \(7 - 10\)

7

Find -3 + 10

8

Find 9 - (-5)

9

Find -6 + (-3)

10

Find -11 - (-11)