Introduce your students to these all-important cornerstones of math with this challenging and comprehensive new title. High interest topics and a variety of activities including mystery pictures, number riddles, and various puzzle challenges ensure that your students stay captivated and motivated. And easy-to-follow instructions, clear illustrations, and a logical scope and sequence of activities make this a ready-to-use and essential addition to your math library. Skills covered include addition and subtraction facts from zero to eighteen, adding and subtracting single and two digit numbers without regrouping, and much more. The activities gradually progress in difficulty, ensuring that your students are introduced to, practice, and reinforce these skills again and again. For extra enrichment, we’ve also included a variety of creative bonus activities as well as two full pages of Learning Extender ideas. Answer key provided. Also available for grade 2 and grade 3.