With these diverse productive exercises, your students will deepen, secure, and practice addition and subtraction within the number range up to 100. The material offers task formats such as magic squares, calculation houses, and calculation walls. Differentiation notes allow you to address the individual performance levels of each student. The tasks can be flexibly used in whole-class instruction, group work, station activities, and independent work. Solution sheets that provide easy control for you and your students complete the volume.