Do Now “ Happiness is like a butterfly; the more you chase it, the more it will elude you, but if...

Do Now“Happiness is like a butterfly; the more you chase it, the more it will elude you, but if you turn

your attention to other things, it will come and sit softly on your shoulder... .” –Thoreau

largest to smallest.2) Complete the following conversions230 g = ______ ng520 km = _______ m

Today’s objective

I can determine the correct number of significant figures by completing metric conversions.

Significant Figures

1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant.

2) ALL zeroes between non-zero numbers are ALWAYS significant.

3) ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant.

4)  ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant.

Best Example

Practice

Multiplication/Division Rules

1) The answer’s significant figures should match the number with the LEAST number of sig figs.

Practice

Addition/Subtraction Rules

• The LEAST number of decimal places limits the significant figurse

Practice

Mixed Practice

Exit Ticket

Complete the following conversions or math problems using the correct sig figs:

1) 2400 mm = ________ km

2) 60 x 50 =

3) 147.3 + 3.33=