Q&A for How to Change Numbers Into and Out of Scientific Notation

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How do I know the number of significant figures?

Donagan

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The number of digits in the decimal number is the number of significant digits.

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What is 24 in scientific notation?

Donagan

Top Answerer

24 = 2.4 x 10.

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How would I convert 1.23 x 10^-5 to 1.23 x 10^5?

Donagan

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Multiply by 10^10.

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What if the exponent of 10 is a zero?

Donagan

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10 (or any other number except zero) when raised to the power of zero is equal to 1.

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Why is it multiplied by 10?

Donagan

Top Answerer

It's actually multiplied by a power of 10. 10 is used because our decimal system has a base of 10.

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I am trying to understand number forms. Is 547 a whole number, and is it written in scientific, standard, or expanded form?

Donagan

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You can identify 547 as a whole number written in standard form.

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Can the coefficient in scientific notation be greater than 10?

Donagan

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The standard form of scientific notation requires the coefficient to be a number between 1 and 10 (inclusive of 1, exclusive of 10). If you were to use a coefficient equal to or greater than 10, the corresponding exponent would be smaller for the same number.

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