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.
3 significant figures. (The zero after the 5 doesn't count.) 4 significant figures if the zero after the 5 does count. A good way of expressing three thousand four hundred fifty with three, four, or five significant figures is with scientific notation: 3.45 * 103 3.450 * 103 3.4500 * 103
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.
2 significant figures.
It is 124.68 rounded to 5 significant figures
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
Because your question has no context, in the sense that we do not know what the number 2071 refers to or how it was obtained, we will have to assume that all four of its figures are significant.
4
There are three significant figures in 00312. Zeros used as placeholders at the beginning of a number are not considered significant.
370.0 has four significant figures. Zeros used for precision purposes, such as the zero after decimal point in this case, are considered significant.
To multiply with significant figures, multiply the numbers as usual and then round the answer to match the number of significant figures in the least precise number used in the calculation.
4 significant figures.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
There are 3 significant figures in 94.2.
A measurement that has a larger number of significant figures has a greater reproducibility, or precision because it has a smaller source of error in the estimated digit. A value with a greater number of significant figures is not necessarily more accurate than a measured value with less significant figures, only more precise. For example, a measured value of 1.5422 m was obtained using a more precise measuring tool, while a value of 1.2 m was obtained using a less precise measuring tool. If the actual value of the measured object was 1.19 m, the measurement obtained from the less precise measuring tool would be more accurate.
The answer depends on what operations were used. There should normally not be more significant figures in the answer than in any of the numbers used in the calculation.
5 significant figures.