Simplify the ratio calculator that shows work to find the equivalent ratio in simplest or reduced form for the given ratio with two or more numbers. The step-by-step calculation help parents to assist their kids studying 4th, 5th or 6th grade to verify the work and answers of simplifying ratios homework and assignment problems in pre-algebra or in ratios and proportional relationships (RP) of common core state standards (CCSS) for mathematics.