At noon, the thermometer showed -2 ° C. By evening, the air temperature changed by -3 °

At noon, the thermometer showed -2 ° C. By evening, the air temperature changed by -3 °, and by midnight by another -5 °. What temperature did the thermometer show at midnight?

In this task, we need to perform actions with negative numbers. Therefore, it is important to remember that if we try to subtract another negative from a negative number, then the number will become larger, only the minus sign will not disappear anywhere. This is the same as adding positive numbers.

1) Find the temperature in the evening:

-2 – 3 = -5 degrees the thermometer showed in the evening.

2) Find the temperature at midnight:

-5 – 5 = -10 degrees the thermometer showed at midnight.

Answer: -10 degrees.