Doing take aways I am reviewing take aways. I am having trouble
How do I do $342 - 58$?
For the ones column I made the $2$ into a $12$ so I can do $12 - 8 = 4$ but I must take away one tens. So I get $3 - 5$ in tens column but I cant do $3 - 5$. What do I do now do I borrow something else?

You lower the hundreds spot by one, and increase the tens spot by 10. Example:
300 + 40 + 2 = 200 + 140 + 2
Now that you do this, you get 13-5 and your answer is an 8 in the tens place, and with a 2 in the hundreds place.
As a whole, it looks like this
342          - 58
300 + 40 + 2 - 50 - 8
200 + 130 + 12 -50 - 8  (1 hundred turns into 10 tens, and 1 ten turns into 10 ones)
200 + 130 -50 + 12 - 8  (just putting them in order)
200 + 80      + 4
284 is the answer
