Answer:
Step-by-step explanation:
Let me give an example here
Say ya had 36 - 40
You put big number on top
40
-36
____
First you subtract from the ones place... Oh no! You can't subtract 6 from 0 we have to regroup, so go over to the next number and that's 4, take one away now that's 3 and you change that 0 to a 10
10
3∅
-36
____
Now subtract and that's your answer
