00:01
So in this problem, we're being asked to subtract 542 minus 288.
00:06
Well, to do this, i'm going to set this problem up vertically.
00:09
So i'm going to have 542 minus 288.
00:14
Remember, we always start with the ones column.
00:16
Well, we're being asked to take away 8 from 2.
00:20
Well, we don't have enough ones to do that.
00:22
So what we're going to have to do is i'm going to have to borrow 110 from the 10th column and add 10 ones to the 2 that i already have.
00:29
So that means i will have 12 ones.
00:33
Now, because i took away one of my tens, i'm now only left with three.
00:37
So now we can subtract in the ones column.
00:39
Well, 12 minus 8 is 4.
00:41
Now we move on to the tens column.
00:44
Well, we're being asked to take away eight tens from three tens.
00:48
Well, but you don't have enough tens.
00:49
So what we have to do now is we have to borrow 100 from the hundreds column.
00:54
And so that means i'm going to add 10 tens to the three that i already have...