Yes.
No
Yes, you do 73 -35 ___ 38
If the total in any column exceeds nine, you will have to regroup.
Yes.
38
When the lower digit is greater than the upper one.
No.
Yes.
No
Yes, you do 73 -35 ___ 38
No, you need a miracle! 73 does not equal 35 and no amount of regrouping will alter that.
If the total in any column exceeds nine, you will have to regroup.
no
18
You need to regroup when you have something like 46-39. You would cross out the 6 and make it a 16, because you are taking ten from the 4, then you cross out the 4 then make it a three, then you should get 7.
-423