What is 200 - 155?

To calculate 200 - 155, you start by aligning the numbers in a way that makes the subtraction clear.

First, consider the number 200. It represents two hundreds and zero units. The number 155 consists of one hundred, five tens, and five units. When you subtract, you're essentially taking 155 away from 200.

Starting with the hundreds, 2 (from 200) minus 1 (from 155) gives you 1 hundred. Then move to the tens: there are no tens in 200, and you have to subtract five tens from zero. In order to do this subtraction, you need to borrow from the hundreds. So, you take 1 hundred from 200 and turn it into ten tens (making it effectively 10 tens). Now you have 10 tens - 5 tens = 5 tens.

Next, look at the units. You have borrowed 1 hundred, so now you have only 90 left in the hundreds place. There are no units to subtract 5 from in the original 200, so simply carry over the borrowing effect, which gives you 10 - 5 = 5 remaining.

Putting all of that together, you have 1 hundred (100