Question

One winter day the temperature ranged from a high of 20 F to a low of -25F . By how many degrees did the temperature change?

Answer 1

The temperature changed by 45 Degrees

Answer 2

45 degrees because when you need to find the difference between them you would first have to add 25 to -25 which equals 0. Then you would add 20 to 0 giving you 20. Then adding 20 and 25 you would get 45. (Tell me if my answer wasnt clear so i can try to go more indepth)