The number 0.0023040 has 5 significant figures because zeros (0s) before other numbers do not count as being significant. So the only significant figures are "23040".
If you write the number in scientific notation, it's easier to tell how many figures are significant.
2.3040 x 10-3 has 5 significant figures.
2 Except that the fact that the figure is given as 3300 g instead of 3.3 kg suggests that the trailing 0s are significant.
Rounding a number to the nearest significant figure means rounding it to the nearest digit that indicates the precision of the measurement. This typically involves looking at the significant figures in the number and rounding to the appropriate level of precision. For example, 345.678 rounded to the nearest significant figure would be 300.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.
6276 as a significant figure would be 4 significant figures.
654 rounded to one significant figure becomes 700.
The significant figure 2.00 has to do with the certainty of a measurement.
there are 2 significant figures
Three
Significant figure
There is 1 significant figure in this measurement.
The measurement of 417.32 g has five significant figures. Each non-zero digit and any zeros between them are considered significant in a decimal number.
There is 1 significant figure in this measurement.
3 of them.
111.0 mm
2 Except that the fact that the figure is given as 3300 g instead of 3.3 kg suggests that the trailing 0s are significant.
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.
Rounding a number to the nearest significant figure means rounding it to the nearest digit that indicates the precision of the measurement. This typically involves looking at the significant figures in the number and rounding to the appropriate level of precision. For example, 345.678 rounded to the nearest significant figure would be 300.