How do you round the decimal to the nearest tenth?

Answer 1

Look at the digit in the hundredths place (the second digit after the decimal point). If that digit is 5 or greater, the tenths place digit is increased by one, otherwise it is left alone. Finally, truncate (drop off) the remaining digits (hundredths place and later).

For example, to round 0.238798 to the nearest tenth we look at the hundredths place (in this case the 3) and see it is less than 5, so we leave the tenths place (the 2) alone. Then we drop off all digits from the hundredths place and later (the 38798). We get 0.2.

Answer 2

Sometimes it is advantageous to express a value in round numbers. To round to a particular place, look at the digit immediately to the right of the one you want to round to, in this case, the hundredths place. If that digit is 4, 3, 2, 1 or 0, zero it and everything to the right of it out. If that digit is 5, 6, 7, 8 or 9, increase your target digit by one and zero everything to the right of it out. If your target digit is 9, it will become a zero and increase the digit to the left of it by one.

Answer 3

Look at the next digit (to the right), the hundredths digit. (If there is no hundredths digit, it is 0).

If it is less than 5 (that is it is 0, 1, 2, 3 or 4) the number rounds down otherwise it rounds up (by adding one tenth):

examples:

• 1.24

Hundredths digit is 4 which is less than 5, so round down to 1.2

• 1.25

Hundredths digit is 5 which is 5 or more, so round up to 1.2 + 0.1 = 1.3

• 1.2

Hundredths digit is not there, so it is a 0 which is less than 5, so round down to 1.2 (that is leave it alone)

• 1.236

Hundredths digit is 3 which is less than 5 so round down to 1.2

Answer 4

1.25

Answer 5

9