What is the difference between 100 and 45?

To find the difference between two numbers, you perform subtraction. In this case, to find the difference between 100 and 45, you would subtract 45 from 100.

So, you calculate:

100 - 45 = 55

This means that the difference between 100 and 45 is 55. The correct answer reflects this calculation, demonstrating a clear understanding of the subtraction operation and its application in finding the difference between two values.