Missouri Learning Standards
MO.4.RA. Relationships and Algebraic Thinking
4.RA.A. Use the four operations with whole numbers to solve problems.
4.RA.A.1. Multiply or divide to solve problems involving a multiplicative comparison.
4.RA.A.2. Solve multi-step whole number problems involving the four operations and variables and using estimation to interpret the reasonableness of the answer.
4.RA.A.3. Solve whole number division problems involving variables in which remainders need to be interpreted, and justify the solution.