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In converting numbers into scientific notation, first you should move the decimal point such that there would be one significant figure to the left of the decimal point.

Examples:

299792458 -> 2.99792458

0.0000000000667428 -> 6.67428

Then, count the number of times you moved the decimal point. Note the direction of movement.

Examples:

299792458 -> 2.99792458 (8 digits to the left)

0.0000000000667428 -> 6.67428 (11 digits to the right)

Lastly, express the number as a product of the modulus (the number with the decimal point moved) and a power of ten.

Examples:

299792458 -> 2.99792458 x 108 (If the decimal point was moved to the left, the power is positive)

0.0000000000667428 -> 6.67428 x 10-11 (If the decimal point was moved to the right, the power is negative)

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Q: Rules of converting numbers to scientific notation?
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