Subtract by breaking apart ones. 53 minus eight.
First, I noticed that 53 has a three in the ones place. So I want to take three out of the eight. Three plus five equals eight. And now, we want to use this grouping to help us subtract. First, we say 53 minus three equals 50. And then, we take 50 and subtract five which equals 45. 53 minus eight equals 45.