Estimate the product $$475\times 225$$ rounding off each number to the nearest hundred.
In $$475$$ the last two digits i.e., $$75$$ is greater than $$50$$.
Therefore, $$1$$ will be added to the 3rd last digit and the last two digits will become zero.
After rounding to nearest hundred we will get $$500$$.
In $$225$$ the last two digit i.e., $$25$$ is less than $$50$$
Thus, the 3rd last will remain same and the last digit will become zero.
After rounding to nearest ten we will get $$200$$.
Hence, the required product is $$500\times 200 = 1,00,000$$