# Significant Digits and Unit Conversion

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1) How many significant figures are there in the answer to the following problem? (8.881*.02100) + .590?

2) A parsec is 206,265 times the distance from earth to the sun. If the distance is 8.000 million miles, express the distance of a parsec in miles in scientific notation.

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#### Solution Preview

(1). When multiplying and dividing, you always take the smallest number of significant figures (in this case it is four). When ...

#### Solution Summary

This solution describes how you identify how many significant digits are kept during addition, subtraction, multiplication and division. It also shows how to convert parsecs to miles. 100 words.

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