How To Write Numbers For A Check . Then, draw a line from the right side of the “5” to the end of the space or write the numbers so large that it’s hard to add any numbers. All you have to do is enter a number with one to nine digits and press the convert button. Bank Of America Check Template Arts Arts from www.muc-con.org Write out the dollar amount. This is a bit easier. Decide on a starting number for the checks.