Fully editable 100 square for lots of uses in the classroom. Fill the squares in different colors to explore number patterns or multiples. Delete numbers to set problem solving activities. Aligned with Common Core State Standard: K.CC.1 Counting and Cardinality; 1.NBT.1, Number and Operations in Base Ten; 2.OA.1, Operations and Algebraic Thinking.
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.