How To Write A Twenty Dollar Check . 77 rows 7 steps to write a check. It has a symbol to the left of it indicating the currency — $ or £, for example. See How to Write Dollars and Cents on a Check from www.thebalance.com Enter the date in the top right corner on the line labeled date. Do this by starting at the far left edge of the space, and draw a line after the last digit. Sign the check on the line in the bottom right corner.