How To Write Three Hundred Twenty Seven On 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. How to write checks of usd dollar amounts both in numerals and in words, cents as fractions Is it valid to write checks without spelling out the amount? Images from image.frompo.com Fill out the check amount in numbers in the box with a $ next to it. Click on convert to words. This tool can write out positive and negative numbers and even numbers with decimals.