Master math facts with speed and accuracy This book provides one-minute subtraction timed tests one fact at a time for minuends 11 to 18. The systematic approach allows students to see their own daily improvements. Great for students in regular classroom settings as well as students in special education. Includes reproducible test pages with answer key, activity sheets, progress charts, a pretest and post- test, bulletin board patterns, a letter to parents, games, awards, and flash cards