How To Write Check With Credit Card . Enter the payment amount in numerical form. If you have the occasion to write a check and could use a quick primer on check writing, check security, check alternatives and check cashing, read on. Guide to Payment CareerOrbits from www.careerorbits.com For example, if you are paying $130.45, you will write “one hundred thirty and 45/100.”. Spell up the numbers and write the cents as a fraction. There are two spots on a check where you write the amount you are paying.