It was −3°C this morning, but the temperature has gone up 13° over the course of the day. What is the temperature now?

The temperature now can be calculated by adding the change in temperature to the initial temperature.

Initial temperature: -3°C
Change in temperature: 13°C

Temperature now = -3°C + 13°C = 10°C

Therefore, the temperature now is 10°C.

To find the current temperature, we need to add the increase in temperature to the morning temperature.

Morning temperature: -3°C
Increase in temperature: 13°C

To get the current temperature, we add -3°C and 13°C:

-3°C + 13°C = 10°C

Therefore, the current temperature is 10°C.