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2.51 rounded to one decimal place is 2.5

Round to one decimal place just means round to one number after the decimal.

Typical rounding rules are if the number to the right is five or higher, than you increase the digit you are rounding by one. If it is four or lower, than you just keep the number the same.

Examples: Round the following numbers to one decimal place:

  • 2.57 = 2.6 (because the 7 was greater or equal to 5)
  • 3.949 = 2.9 (because the 4 is less than 5)
  • 80.95 = 81.0 (the 9 rounds to 10 because 5 is greater than or equal to five)

In this case, rounding 2.51 to one decimal place gives us:2.5, because the one is less than or equal to five.

The answer is 2.5.

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9y ago

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