Solve Two-Step Word Problems (Addition & Subtraction)

(A) Solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction

(Y2) Solve simple addition and subtraction problems using a range of efficient mental and written strategies (ACMNA030)

3.OA.8 Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.