Learn how to use ordinal numbers in English with clear grammar rules, common usage, and examples. Includes a full list from 1st to 100th. Not an Online Banking Customer Yet? Create an Online Banking profile Online Banking gives you access to your FirstBank accounts and loans online, making it fast and easy to do your banking when it's convenient for you. Abbreviation of first. We offer convenient locations with extended hours, online and mobile banking services, and innovative, customer-friendly financial solutions, such as a variety of checking and savings accounts, business accounts, CDs, IRAs, credit cards, consumer and business loans, and mortgages. Find sunshine on a cloudy day with a First Credit Union savings account. With so many different choices from money markets to retirement savings, you’re sure to find Financial Sunshine ® here! Spend smart and get more for your money when you choose First Credit Union for checking, cards, and more. That’s pretty sunny. FirstBank offers banking solutions for businesses and consumers including loans, mortgages, checking and savings accounts, online and mobile banking, and more. Serving the northern Indiana-southwestern Michigan area with nearly $8 billion in assets and more than 1100 employees, 1st Source is here for you. FDIC-Insured — Backed by the full faith and credit of the U.S. Government. You deserve more from your bank— more convenience, more reliability, and more peace of mind. We're here for you with banking that makes your life easier, no matter where you are in your financial journey. Here is the short answer, in case you are in a rush: '1st' is the correct numeric abbreviation of the ordinal first. '1th' is a grammatical error, and it should never be used. The brief overview will help you if you need to quickly decide which spelling to use, but there is more to learn. Ordinal numbers may be written in English with numerals and letter suffixes: 1st, 2nd or 2d, 3rd or 3d, 4th, 11th, 21st, 101st, 477th, etc., with the suffix acting as an ordinal indicator.