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Significant Figures PowerPoint

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Exact vs. Measured Values<br />

Most of the math we are taught involves using<br />

exact numbers.<br />

Exact numbers are used in science along with<br />

measurements, which are inexact numbers.<br />

Counted objects or defined values are exact.<br />

For example, the average person has 10 fingers.<br />

That’s a count.<br />

There are exactly 1000 mm in 1 m. That’s a defined<br />

value.

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