How many significant figures are there in the measurement 238.230 kg?

In both the rocks, 60% remains. If m% of mass remains now after T billion years, $m=ce^(-kT)$, where c and k are constants for the radioactive material that is...

In order to be able to say how many are used for the measurement $"811.40 g"$, you need to know that non-zero digits are always significant a...

The first and most important thing to notice here is that your measurement contains two non-zero digits, $1$ and $5$. As you know, all non-zero digits are significant, so...

All non-zero numbers are always significant. Zeroes are significant if they are between two other significant figures, and when they come after the decimal.

The thing to remember about multiplication and division is that the resulting value cannot have more than the measurement that has the least number of significant figures. Simply put,...

0.020 has two significant figures. The 2 is significant because all non-zero numbers are signficant. The second 0 is significant because all zeros at the end of a decimal...

In this should actually be written as $1.03*10^3$, but in tables they sometimes keep to the same $10$-power.

For starters, you should know that all non-zero digits are significant, so right from the start, you can say that the measurement has at least $2$ $color(black)(color(red)(1)00.000color(red)(1) ->$...

The problem provides you with the following measurement $"2103.2 g"$ The first thing you need to do here is to figure out the number of non-zero digits you...

For starters, you should know that non-zero digits are always significant. So right from the start, you know that this measurement has at least two significant figures, $3$ and...