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The standard (or scientific) notation comes in two parts:

the mantissa, a is a number such that 1 ≤ a < 10

and the exponent, b, which is an integer.

Given any number, write it so that the decimal point is after the first non-zero digit. Next, calculate the number of digits that you moved the decimal point. The number of places determines the value of b. If you moved the decimal point to the left then b is positive, if to the right, b is negative and if you did not move it at all, b is 0.

Examples:

2345.678 = 2.345678*103

0.00234 = 2.45*10-3

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11y ago

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