This workbook contains 100 addition facts worksheets. Each worksheet has 35 exercises. The first 20 worksheets focus on a single number's addition facts, which is good for beginning students. Worksheets 21-30 have the facts 1-10 mixed. Worksheets 31-50 have the facts 2-10 mixed (the 0's and 1's are now removed). Worksheets 51-100 are like worksheets 1-50 except that the numbers 11-20 are included. Each worksheet has designated room at the top for students to write their names and for teachers or parents to record the score and time. All of the exercises are numbered for easy reference. All of the answers are tabulated in the back of the book, also with numbers so that teachers or parents can easily check the solutions. The exercises are written with a size 14 font. The copyright notice allows teachers and parents who purchase this book to reproduce selected worksheets for their own students and children.