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When you've finished operating on your numbers to round to 3 sig fig you want to round to the first three digits starting with the first non-zero digit by using the fourth digit (as normal) and then replace all further digits to the right by zeros and removing any digits so changed to zero after a decimal point.

Examples:

12345 to 3 sig fig is 12300 since the 4 does not round up the 3.

124578 to 3 sig fig is 125000 since the 5 rounds up the 4.

0.1234 to 3 sig fig is 0.123 since the 4 does not round up the 3 and the trailing zeros (created) are removed.

0.001234 to 3 sig fig is 0.00123

12984 to 3 sig fig is 13000 since the 8 rounds the 9 up.

0.012984 to 3 sig fig is 0.0130 since the 8 rounds the 9 up.

3333333333.33 to 3 sig fig is 3330000000

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How is precision related to the significant figures in a measured quantity?

The greater the number of significant figures, the greater the precision. Each significant figure increases the precision by a factor of ten. For example pi = 3.14 is accurate to 3 significant figures, while pi = 3.14159 with 6 significant figures is a more accurate representation.


How many significant figures are in 20000?

There are only one significant figure in the number 20000. Significant figures are the digits in a number that carry meaning contributing to its precision. In this case, the zeros in 20000 are not considered significant because they are serving as placeholders to indicate the magnitude of the number rather than its precision.


How many significant figures are in 250.00?

There are five significant figures in the number 250.00. All the digits in this number are considered significant because they are all measured with precision. The zeros at the end of the number after the decimal point are also significant because they indicate the level of precision to which the measurement was taken.


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The number 0.00038 has two significant figures. Significant figures are digits that carry meaning contributing to the precision of a number. In this case, the zeros before the 3 and 8 are not considered significant because they are leading zeros that simply indicate the decimal's placement. The 3 and 8 are the significant figures in this number.


How many significant figures are in 370.0?

370.0 has four significant figures, because the last zero indicates the precision of the number (to 1 decimal place).

Related Questions

How is precision related to the significant figures in a measured quantity?

The greater the number of significant figures, the greater the precision. Each significant figure increases the precision by a factor of ten. For example pi = 3.14 is accurate to 3 significant figures, while pi = 3.14159 with 6 significant figures is a more accurate representation.


How many significant figures are in 20000?

There are only one significant figure in the number 20000. Significant figures are the digits in a number that carry meaning contributing to its precision. In this case, the zeros in 20000 are not considered significant because they are serving as placeholders to indicate the magnitude of the number rather than its precision.


How significant figures are in the number 7.405?

There are four significant figures in the number 7.405. These include the digits 7, 4, 0, and 5, all of which are considered significant in defining the precision of the number.


How many significant figures are in 250.00?

There are five significant figures in the number 250.00. All the digits in this number are considered significant because they are all measured with precision. The zeros at the end of the number after the decimal point are also significant because they indicate the level of precision to which the measurement was taken.


How many significant figures does 2370.0 have?

2370.0 has five significant figures. The zero at the end of the number is significant because it's a part of the measurement accuracy or precision.


How many significant figures are in the number 0.00038?

The number 0.00038 has two significant figures. Significant figures are digits that carry meaning contributing to the precision of a number. In this case, the zeros before the 3 and 8 are not considered significant because they are leading zeros that simply indicate the decimal's placement. The 3 and 8 are the significant figures in this number.


How many significant figures are in 370.0?

370.0 has four significant figures, because the last zero indicates the precision of the number (to 1 decimal place).


How do significant figures impact the accuracy of measurements in dimensional analysis?

Significant figures play a crucial role in dimensional analysis by indicating the precision of measurements. When performing calculations, it is important to consider the number of significant figures in each measurement to ensure the accuracy of the final result. Using the correct number of significant figures helps maintain the precision of the calculations and ensures that the final answer is reliable.


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There are three significant figures: the trailing zeros are significant because they are indicative of the precision of the number.


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There a four significant figures in the number 16.82, the last '2' determines the best precision available.


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