- This PDF File - Mad Minute Math Drills for subtraction are fast-paced, timed exercises designed to improve students' fact fluency. These 10 minute tests help children master basic subtraction facts, ensuring quick and accurate recall. Each morning, students complete a short, timed subtraction drill, solving as many problems as possible within 10 minute. Regular practice helps them recognize patterns, develop number sense, and track their progress over time. By incorporating these drills into t