Develop mental math skills that will serve students in the classroom and beyond. Based upon Singapore Math curriculum, 52 practice pages, a strategies overview, and step-by-step examples will provide an easy-to-implement supplemental review component to your classes. Strategies such as doubles, breaking up, counting on, and number bonds. One worksheet with 10 mental math problems for each week. 64 reproducible pages with answer key included. Softcover. Level 1. Grade 2.