Estimate the Difference Calculator

Estimate the difference calculator that shows work to find the approximate difference by rounding minuend and subtrahend to the nearest 10, 100 or 1000. The step-by-step calculation help parents to assist their kids studying 3rd or 4th grade to verify the work and answers of estimate the difference by rounding minuend and subtrahend to the nearest ten, hundred or thousand homework and assignment problems in pre-algebra or in number and operations in base ten (NBT) of common core state standards (CCSS) for mathematics.