# Math

**Created:**2014-07-17

**Last Modified:**2014-08-01

^{4}+ 6.91 x 10

^{5 }

^{4}+ 69.1 x 10

^{4}

^{4}= 7.2 x 10

^{5}

^{5}->10

^{4})

^{5)}-> √(81 x 10

^{4})

^{4}= 9 x 10

^{2}

- The number of numbers in your measurement = level of accuracy

**Rule 1**- Any zero BETWEEN two significant numbers is

*also*a significant number (ex. 70.004 = 5 significant figures)

**Rule 2**- Any zero IN FRONT of a significant number is NOT significant

**Rule 3**- Any zero TO THE RIGHT of a significant number IS significant

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