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.

The year before the 10s so it was like when caveman were alive