Dear Math Central,
Integers are so much a part of your everyday life that it is hard to imagine a situation where you don't use them.
I went on a trip this weekend and had to drive 600 kilometers. On part of the trip the speed limit was 100 kilometers per hour and on another stretch of road it was 110 kilometers per hour.
Yesterday when we went to lunch there were 5 of us but we only ordered 4 lunches since the fifth person was only 1 year old.
The city that we are visiting has street names that are integers. 1st street South West, 2nd street South West, ... 1st avenue North West, 2st avenue North West and so on. This made finding our hotel easy. The property of the integers that is really useful here is the fact that they are ordered. If I am driving along 3rd avenue SW and have just crossed 5th and 6th streets NW then I know the next street is 7th NW.
I use negative integers in my everyday life also, especially in the Winter. The temperature outside when I got up yesterday morning was -12o C. The high for the day was -3o C so the temperature rose -3 -(-12)) = 9 degrees Celcius.I hope this helps,