Significant figures should be rounded when reporting a measurement or calculation to reflect the precision of the original data. This is done to ensure that the final result is consistent with the accuracy of the measurements used.
When performing addition and subtraction operations with measurements of different significant figures, the result should be rounded to the same number of decimal places as the measurement with the fewest significant figures.
When adding numbers with significant figures, the result should be rounded to the least number of decimal places in the original numbers. Add the numbers as usual, then round the result to the appropriate number of significant figures.
When divided by a calculator 45.67kg/3.42L equals 13.35 kg/L. Of the two quantities the highest common certainty we have is the 3 significant figures from the volume. Therefore the answer would be 13.4 kg/L rounded to three places.
When adding numbers with significant figures, the result should be rounded to the least number of decimal places in the original numbers. Only the digits that are certain should be used in the final answer.
When subtracting numbers with significant figures, the answer should be rounded to the same number of decimal places as the number with the fewest decimal places. This ensures that the final answer reflects the precision of the original numbers.
When the value 4,449 is rounded to two significant figures the number should be reported as 4,400
It is 6.7 when rounded to 2 significant figures
You didn't say how many significant figures. But, rounded to six significant figures it would be 5206.00
0.00721004 rounded into three significant figures is 0.00721
0.000709999 rounded to 3 significant figures is 0.000710
44.981 rounded to three significant figures is 45.0
16.275 rounded to 3 significant figures is 16.3
79,966.92 rounded to three significant figures is 8.00e4
34,696 rounded to two significant figures is 35,000.
9,682 rounded to three significant figures is 9,680.
0.092347 rounded to 3 significant figures is 0.0923
0.00067 rounded to two significant figures = 0.00067