3.98 rounded to the nearest tenth (one decimal place)

Rounding Chart
Places Ones Tenths Hundredths
1 1
Number 3 . 9 8
Rounded Number 4 . 0
  • 9 is in the tenths place and 8 is in the hundredths place
  • Since the digit in the hundredths place (8) is greater than or equal to 5, add 1 to the digit in the tenths place (9)
  • 1 + 9 = 10, so the digit in the tenths place becomes 0, and 1 is added to the digit in the ones place (3)
  • 1 + 3 = 4, so the digit in the ones place becomes 4
  • The digit in the hundredths place is dropped
  • 3.98 rounded to the nearest tenth (one decimal place) = 4.0

The solution above and all other related solutions were provided by the Round to the Nearest Tenth Application.