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happykid
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Significant Figures and scientific notation!
how come 8.231x10^3 - 5.25x10^2 = 7.706*10^2 ?
and how come 350 - 10.5 = 3.40x10^2
how come 8.231x10^3 - 5.25x10^2 = 7.706*10^2 ?
and how come 350 - 10.5 = 3.40x10^2
Significant figures are the digits in a number that are considered to be accurate and reliable. They represent the precision and accuracy of a measurement. In scientific notation, significant figures are used to indicate the level of precision in a number, making it easier to work with very large or very small numbers.
The rules for determining significant figures are as follows:
When performing calculations with significant figures, the result should have the same number of significant figures as the measurement with the least number of significant figures. For addition and subtraction, the result should be rounded to the least number of decimal places. For multiplication and division, the result should be rounded to the least number of significant figures.
Scientific notation is a way of writing numbers that are very large or very small in a more compact and convenient form. It is expressed as a number between 1 and 10 multiplied by a power of 10. For example, 250,000 can be written as 2.5 x 10^5. It is commonly used in scientific and mathematical calculations to make working with large or small numbers easier.
To convert a number to scientific notation, follow these steps: