Randomly generating subtraction problems within 100 is an effective way to improve elementary school students' math levels. This method can help students practice and master subtraction operations within 100, thereby improving students' math levels. Randomly generated problems ensure that each practice session has different content, preventing boredom and enabling students to persist in practice. In addition, randomly generated problems can help students better master mathematical knowledge within 100, thereby improving students' mathematical abilities. Using this method can help students easily master subtraction operations within 100 and improve their math levels.