The answer to an addition question should have no more decimal places than the smallest number of decimal places in the numbers being added. When rounding numbers, numbers 5 though 9 will be rounded up and 1 through 4 will be rounded down.
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If the number to the right of the place value, in which you are rounding to, is 4 or less, you round down. If the number to the right of the place value, in which you are rounding to, is 5 or more, you round down.Examples:25 rounded to the nearest ten would be 30.261.57 rounded to the nearest one would be 262.00246.4 rounded to the nearest hundred would be 200.
It depends on what you are rounding by. If you are rounding by ten-thousands=80000 If you are rounding by thousands=85000 If you are rounding by hundreds=84700 If you are rounding by tens=84650
That depends on how you are rounding: Rounding up = 6.33 Rounding down = 6.32 Rounding nearest = 6.32