In the example below, notice that rounding to the nearest ten produces a far more accurate estimate than rounding to the nearest hundred. No regrouping is needed since each number in the minuend is gr...In the example below, notice that rounding to the nearest ten produces a far more accurate estimate than rounding to the nearest hundred. No regrouping is needed since each number in the minuend is greater than or equal to the corresponding number in the subtrahend. When buying a new computer, you find that the computer tower and keyboard cost $1,295, the monitor costs $679, the printer costs $486, the 2-year warranty costs $196, and a software package costs $374.
