One Hundred Minutes to Better Basic Skills Help middle-grade students master essential math skills with the motivating, classroom-tested Math Minutes format featured in these two new books. Each book provides 100 Minutes of 10 problems each for students to complete within a one- to two-minute period. Providing daily practice in every key area of math instruction, Math Minutes is a fun way to improve students problem-solving speed (crucial for testing situations) and an instant assessment tool.