To spell out 102 on a check, you would write "one hundred two" in the space provided for the numerical amount of the check. It is important to write the amount both in numbers and in words to avoid any confusion or misunderstandings. In addition, be sure to write neatly and legibly to ensure that the check can be processed without any issues. It may seem like a small detail, but taking the time to properly spell out the amount on a check can help ensure that your financial transactions go smoothly and accurately. So, double-check your spelling before signing and sending your check.