2.Note that the required number of decimal places is 3. Now locate the digit in that place. That is locate the digit in the third place of the decimal part of the given number, which is 9.
3.Look at the digit in the fourth-place of the decimal part to determine whether or not the third digit will remain the same or be increased. The digit is 7 which is greater than 5. Therefore the required answer is 2.740.
