Learn about Subtraction of Whole Numbers In this video lesson, we’ll cover the subtraction of whole numbers. We’ll use two problems. The first one, let’s do first which is 1,000 - 567. By the way, just for terms perspective, the bigger number or the first number from which the second one is being subtracted is called a minuend and this number which is being subtracted is called subtrahend. Let’s learn about how we subtract these. The way we subtract them is we put the numbers together or lining them on the right. The right digits of both the numbers have to be flushed against each other. Then when we subtract, we subtract column by column borrowing from the left is needed. In this case, 0 - 7, we can’t do that because 0 is less 7, so I'm going to borrow one from the left. So, 10 - 7 will become 3. While this was 0, it would have become 10 if I borrowed from the left but I also give one here. Since one was borrowed, this became a 9. This became a 9 because I borrowed one to do the right column. So, 9 - 6 became 3. Similarly, this also became 9 because borrowed from here. So, 9 - 5 became a 4 and this one disappeared because I borrowed it on the second digit. So, 1,000 - 567 becomes 433 which is the subtraction result we were looking for. Let’s try the second one which says 2,300 students registered themselves for a course in college but only 1,256 paid the fee and showed up. How many students skipped the course after registering? It’s a simple subtraction problem which is out of 2,300, 1,256 did not show up. Only 1,256 showed up, we need to find how many skipped. In order to subtract 2,300 - 1,256, we do exactly what we did above. We align them together. I borrow from the left, so this becomes 10, 10 - 6 becomes 4. This is now 9. 9 - 5 became 4. Since I borrowed one over, this is 2, so 2 - 2 is 0 and this is 2 - 1 is 1. The final result is 1,044.