(2) Number, operation, and quantitative reasoning. The student selects and uses appropriate operations to solve problems and justify solutions. The student is expected to:
(A) select appropriate operations to solve problems involving rational numbers and justify the selections;
(B) use appropriate operations to solve problems involving rational numbers in problem situations;
(C) evaluate a solution for reasonableness; and
(D) use multiplication by a given constant factor (including unit rate) to represent and solve problems involving proportional relationships including conversions between measurement systems.