Description: A quick-reference guide that allows teachers to quickly identify the prerequisite standards for every Grade 2 math standard. 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. Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. By end of Grade 2, know from memory all sums of two one-digit numbers.*Teacher Advisor is 100% free.