如何计算Rounding

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Rounding replaces a number with a simpler approximation. The most common method is round-half-up: if the digit after the rounding position is 5 or greater, round up; otherwise round down.

分步指南

1. 1Identify the place value you are rounding to (ones, tens, tenths, etc.)
2. 2Look at the digit immediately to the right
3. 3If it is 5 or more, add 1 to the rounding digit and drop everything to the right
4. 4If it is 4 or less, keep the rounding digit and drop everything to the right

例题解析