Art of Problem Solving Beast Academy 2D Guide and Practice 2-Book Set

AoPS 2-Book Set : Art of Problem Solving Beast Academy 2D Guide and Practice 2-Book Set : Beast Academy 2D covers the following topics: Big Numbers: Thousands, millions and larger place values. Reading, writing, adding, subtracting, comparing, and estimating with big numbers. Algorithms: Stacking addition with regrouping, adding more than two numbers at a time, stacking subtraction with breaking, and solving cryptarithms. Horrible Ray endorses the Art of Problem Solving Beast Academy 2D Guide and Practice 2-Book Set for 2nd Grade and up. Horrible Ray, Horrible Books, Horrible University.