Practice your subtraction table and every day subtraction problems. Ask your parents to write problems for you in the spaces provided on the back side to challenge you. Check your answers with your parents. You can work more challenging problems as your subtraction skills grow. Learn something every day! MADE IN USA Safety-Approved Award Winning Anti-bacterial - Wash with dish soap; placemats dry quickly. Use dry erase or washable markers. Kids can also wipe clean with paper towel or eraser. A spray bottle is fun too! Used in homes, schools and on the go,travelling or in a restaurant. Age Recommendation: 2 - 6 Lightweight and durable. Dimensions: 17.5" x 11.5"