How do you round 49.95 to one decimal point?

Answer 1

The answer is 50.0. We have two possible solutions -- 49.9 and 50.0. The difference between 49.95 and 49.9, 0.05, is the same as that between 49.9 and 50.0. Hence, the conventional answer is the larger number, 50.0 (taking the higher number being the tie-breaker).

A trick question can be how to round 49.44485 to one decimal point. Here you have two possible answers, 49.4 and 49.5. The tie-breaker is the digit in the second decimal place, which is 4. Hence, the correct answer is 49.4. Had I considered the digits after the second decimal place, I might have mistakenly done the following conversion: 49.44485 --> 49.4449 --> 49.445 --> 49.45 --> 49.5, which is the wrong answer. The mistake was that I took too many trailing digits into consideration.

Another check to the answer will be checking if 49.44485 being closer to 49.4 or 49.5. The number, 49.44485, differs from 49.4 and 49.5 by 0.04485 and 0.05515. The number, 49.4 gives the smaller difference, and so is the correct answer.

Rounding to one decimal place means giving one digit after the decimal point.

=============================================