Learning mental math strategies (with these no-prep lessons) is an excellent way to develop number sense and fluency. 5-10 minutes a day is all it takes! As students get comfortable and flexible with numbers and operations, they will grow their brains, boost their efficiency, and fuel their fluency. Animated presentations are included in PowerPoint and Google Slides.In this free sample, you will receive 2 weeks of mental math. Each weekly presentation includes problems for 5 days. Each week