What is the total of 100 minus 45?

To determine the total of 100 minus 45, we perform a simple subtraction calculation:

100 - 45.

When you subtract 45 from 100, you are essentially finding out how much remains after taking away 45 from the total of 100. To do this, you can line up the numbers and subtract:

Starting from the rightmost digit, you take 0 and subtract 5, which cannot be done without borrowing.

So, you borrow from the next digit (the 0 becomes 10, and the next digit in the 100 becomes 9), making the calculation:

10 - 5 = 5.

Now move to the next digit, which is now 9 (after the borrowing) and subtract the 4:

9 - 4 = 5.

Combining these results, we find that 100 - 45 equals 55.

This leads to the conclusion that the answer is indeed 55, confirming that the correct option aligns perfectly with the basic arithmetic calculation.