Strong math skills are essential to success in school and life. Math Practice Simplified—Addition provides practice in the concepts of addition, from basic facts through adding three 3-digit numbers to 4-digit numbers with regrouping in all places. The exercises are placed on the pages so that adequate workspace is available with few visual distractions to interfere with concentration. Concepts in this eBook are based on Principles and Standards for School Mathematics as identified by the National Council of Teachers of Mathematics. Answers are provided at the back of the book.