Well, we have:
52
-19
-----
9 cannot be subtracted from 2, so the 5 means 5 tens, we just take one away and make it 10 ones:
4 12
(5)(2)
-19
------
Now, we can completely subtract:
4 12
(5)(2)
-19
------
33
And there you go.
When we use the standard subtration algorithum to subtrart
52
-19
_____
we must regroup. Which property or properties of arithmetic do we use when we regroup?
Answer this question by writing 52 in expanded form and by using parentheses carefully to show regrouping.
thank you