At 6 a. m. the temperature was - 8 Celsius and noon the temperature was 3 Celsius what was the change of temperature between 6 a. m. and noon

To do this subtract - 8 by 3 (3 - - 8). To do this, change - 8 into positive 8 and the subtraction sign to an addition sign. It would basically be 3 + 8. There was an 11 degrees change between 6 am and noon.