The math practice page focuses on enhancing students' proficiency in subtraction, specifically involving two-digit numbers. The basic approach to solving a subtraction problem is to align the numbers vertically, ensuring that the ones, tens, and higher-level digits are in the correct place columns. Starting from the rightmost digit (the ones column), subtract each digit of the bottom number from the digit directly above it. If the top digit is smaller than the bottom digit, borrowing is required from the next left column. After completing the subtraction for all columns, the result gives the difference between the two numbers.