00:01
Yes, hello.
00:01
So to demonstrate here, how we can do 50024 minus 268 using manipulatives.
00:11
Well, we can actually always subtract left to right.
00:15
But we really actually never have to subtract either because we can always think of subtract as just the addition of the opposite.
00:23
So we can basically have manipulatives where we'd have five dots representing our 500s, two dots representing our two tens and four dots representing our four ones.
00:36
And then we'd have well two andi dots or pods representing our 200.
00:42
So basically you'd have five one two three five dots and then two um two tons.
00:51
But whenever we have a dot and a tot together, they just annihilate here.
00:55
They go poof and we'll left well with three um with three um with three and the same thing we can do for the tens and the ones, but this is the same thing as basically just subtracting 1.
01:08
You can say 5 minus 2 is going to be 3.
01:11
Now 2 minus 6, you can say, well, can't do that.
01:14
But sure, you can 2 minus 6 is actually going to be negative 4...