If you are currently struggling or have had a hard time with math in the past, donít worry. 5 Out of Every 4 People Have a Problem with Fractions. This hilarious t-shirt makes a great gift for your favorite math teacher or anyone who appreciates clever t-shirts. Our t-shirts are made from 100% pre-shrunk cotton. This Fractions T-shirt is available in adult sizes S, M, L, XL and XXL (+2.00). Machine wash cold.