The temperature in the morning is -4°C, and it rises by 8°C at noon, what is the temperature in °C at noon?
一天凌晨的气温是-4°C，中午比早晨上升8°C，中午的气温是多少°C．
<gadget id="calculator">(-4) + 8</gadget>
<output>4</output>

<result>4</result>