CCLS - Math: 4.OA.3

Operations And Algebraic Thinking
Use The Four Operations With Whole Numbers To Solve Problems.
State Standard:
Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. 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.