0
221.0988478
Without specific information relating to the format required of the answer then there are 10 significant figures in this number.
If the question required the answer to three decimal places then the number would be presented as 221.099 which has 6 significant figures.
If the question asked for the answer to the nearest hundred then the answer becomes 200.0 which is correct to 1 significant figure.
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When are zeros considered significant digits?
When they are between two non-zero digits or if there are after the decimal point. For example, the 0 is not significant in 1340 but it is significant in 1304 or 1340.0
What digits are considered significant in a measurement?
Non-zero digits are always significant. Thus, 569 has three significant digits, and 69.35 has four significant digits. Zeros are sometimes significant and sometimes aren't: # Zeroes placed before other digits are not significant; 0.0968 has three significant digits. # Zeroes placed between other digits are always significant; 70063 kg has five significant digits. # Zeroes placed after other digits but behind a decimal point are significant; 7.90 has three significant digits. # Zeroes at the end of a number are significant only if they are behind a decimal point as in (c). Otherwise, it is impossible to tell if they are significant. For example, in the number 8200, it is not clear if the zeroes are significant or not. The number of significant digits in 8200 is at least two, but could be three or four. To avoid uncertainty, use scientific notation to place significant zeroes behind a decimal point: 8.200 * 103 has four significant digits 8.20 * 103 has three significant digits 8.2 * 103 has two significant digits
What are zeros always considered in significant digits?
There is nothing that zeros are always considered. Zeros in some positions are significant, in other position are not. There is no always.
How many significant figures are in 30.1?
In the number 30.1, there are three significant figures. The digits 3, 0, and 1 are all considered significant because they contribute to the precision of the measurement. Zeros that are placeholders or trailing zeros after a decimal point are also considered significant in this case.
How many significant digits are in 20.009?
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
