0.021 contains two significant figures. This indicates that an approximation has been made and the full number was, for example 0.0212.
Note : This should not be confused with necessary and unnecessary zeros. The 0 immediately after the decimal point is a necessary zero. The zero in front of the decimal point is an unnecessary zero but is usually left in place in the absence of a whole number.
Chop off any zeros on the left. How many digits are left?
3. There are 3 significant figures.
Note that you should not chop off digits on the right - 0.00121 is different from 0.001210: 0.001210 is specified to 4 significant figures (if the fourth figure weren't significant, it would have been left out!).
3 sig figs: 1, 2, 1
3 of them.
Three
Significant figures are used to receive a more accurate number. To obtain the number you you multiply or divide the quantities, leave as many significant figures in the answer as there are in the quantity with the least number or significant figures. If adding or subtracting quantities, leave the same number of decimal places in the answer as there are in the quantity with the least number of decimal places
Non-zero digits are always significant, so the number 12 has two significant figures.
You cannot round off a number to 3 significant figures when it already has more than 3 significant figures. The number 10074 has 5 significant figures (1, 0, 0, 7 and 4). If the number were really 1.0074, then it could be rounded off to 3 significant figures: 1.01.
The number 7380 has three significant figures. The zero is not significant because it is not followed by a decimal point.
Significant digits are digits that provide useful information, for instance 123 has 3 significant digits and 30010 has 4 significant digits. So basically zeros aren't significant unless they are between two other numbers. 0.1020 has only 4 significant digits. A+: 4
Three significant figures are in this number.
The number 805 has three significant figures.
There are 4 significant figures in this number.
There are 2 significant figures in this number.
There are 4 significant figures in this number.
There are 3 significant figures in this number.
There are 3 significant figures in this number.
There are six significant figures in this number (i.e. all the figures here are significant).
There are 3 significant figures in this number.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
Give the number of significant figures in this number:2.110
There are four significant figures in the number 0.01483