6,762 to 3 significant figures is: 6,760
680
8
3 of them.
778
3 significant figures.
9
9.999 to 3 significant figures is 10.00
4,566 to 3 significant figures is 4,570.
3 of them.
33.0
The correct answer is 1960
Yes, that is correct.
778
Significant figures are very important when it comes to calculations. If the mass of an electron is 9.10939 x 10-31 then its significant figures are: 9 x 10^-31( correct 1 significant figure), 9.1 x 10^-31 kg ( correct to 2 significant figures), 9.11 x 10^-31 (correct to 3 significant figures), and 9.109 x 10^-31 (correct to 4 significant figures).
What is 2.009 rounded to 2 significant figures
How many significant figures are in 20.8
The correct answer is 2. The three zeros between the decimal point and the 1 are place holders but they are NOT significant digits. See, for example, the Wikipedia link.
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.
6040 has 3 significant figures.