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Q: What are the rules to be followed in determining the number of significant figures?

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You count the number of figures from left to right starting with the first number different from 0. Example: 205 has 3 significant figures 0.0000205 has 3 significant figures 0.000020500000 has 8 significant figures

The number 7380 has three significant figures. The zero is not significant because it is not followed by a decimal point.

The number 1.84 x 103 has three significant figures, 1.84. The 103 part of the number does not count when determining significant figures.

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= significant figures = and got For addition and subtraction, the result should have as many decimal places as the measured number with the smallest number of decimal places.

Three significant figures are in this number.

addition multiplication division subtraction

If the conversion factor is exact, then the number of significant figures in the answer is the same as the number of significant figures in the original number.If the conversion factor is an approximation, then the number of significant figures in the result is the lesser of this number and the number of significant figures in the original number.

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

There are six significant figures in this number (i.e. all the figures here are significant).

There are 3 significant figures in this number.

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