You get 280.
Rounding a number to four signifcant figures means only writing the first 4 digits after the decimal point. For example, rounding 4.593824453 to 4 significant figures would be 4.5938.
If the zeros are significant figures then 900 is correct to 3 significant figures. If rounding off has occurred then the answer could be 1 sf or 2sf. For example : If the original number was 903 and rounding off to the nearest ten was required then 900 is correct to 2 significant figures. If the number was 927 and rounding off to the nearest hundred was required then 900 is correct to 1 significant figure.
38.0 don't forget the 0
273.821 contains 6 significant figures. Rounding that to Hundredths (5 sig. figures) it becomes 273.82 Rounding it to Tenths (4 sig. figures) it becomes 273.8 And Rounding it to the nearest whole number (3 sig. figures) it becomes 274 etc., etc.
That depends to what number of figures you are rounding to. Rounded to one significant figure, 361 is approximately equal to 400. Rounded to two significant figures, this is equal to 360.
Answer: 0.000763 Explanation: The significant figures (also called significant digits and abbreviated sig figs) of a number are those digits that carry meaning contributing to its accuracy. The concept of significant figures is often used in connection with rounding. Rounding to n significant figures is a more general-purpose technique than rounding to n decimal places, since it handles numbers of different scales in a uniform way. To round to n significant figures start Start with the leftmost non-zero digit, if you are going to use in unbiased rounding, .075 becomes .07. But if you are going to use biased rounding, .075 becomes .08 Any way, in your case, 0.00076321 becomes 0.000763
Rounding is a good idea when:one of the components in a sum is given to fewer significant figures. Often, the answer cannot contain more significant figures (sf) than the lowest sf of its components.the exact answer is irrational (or transcendental) and it is impossible not to round the answer.