When it is between non-zero digits, e.g.: 504 or 2005When there is one or more zeros after the last non-zero digit AFTER the decimal point, e.g.: 3.40
When there are zeros after the last non-zero digit in a whole number, one or more zeros MAY be significant, e.g.: 500. But if you have to guess, you should consider such zeros to be non-significant.
Chat with our AI personalities
No, a leading zero is NEVER a significant digit.
The number 10.00 has four significant figures. In a number, any non-zero digit is considered significant. Zeros between non-zero digits are also significant. Therefore, in this case, both the 1 and the 0 after the decimal point are considered significant figures.
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
There are three significant figures in the number 8.09. The first two digits, 8 and 0, are considered significant because they are non-zero numbers. The third digit, 9, is also significant because it follows a non-zero number and is a measured value.
Only one of them is significant. The leading zero (zero to the left) is not significant. The trailing zero (rightmost) is significant. To recap, only the zero following the seven is significant. See the related links for a really good article on significant digits.