Question

Round it to the nearest 2 decimal places because pacing a chain is an estimate and inaccurate so rounding more than 2 decimal places will not make a significant difference.

Answer 1

When adding or subtracting numbers, round the result to the same number of decimal places as the number with the least number of decimal places. Rounding to more than 2 decimal places is unnecessary for estimation purposes.

Step-by-step explanation:

When adding or subtracting numbers, round the result to the same number of decimal places as the number with the least number of decimal places. This is because the least certain value in terms of addition and subtraction determines the level of accuracy for the final result.

For example, if you are adding 10.456 and 2.6, we notice that the number with the least number of decimal places is 2.6, which has only 1 decimal place. Therefore, we round the result to 1 decimal place. The answer would be 13.056 rounded to 13.1.

Remember, rounding more than 2 decimal places will not make a significant difference in estimation, so it is sufficient to round to 2 decimal places in most cases.