Significant+Figures

Watch this video for another demonstration. media type="youtube" key="ZbTxK6-1fDg?rel=0" height="360" width="480" align="center"
 * __Significant Figures __** Open this file and save it to your laptop for the notes on today's lesson. [[file:Significant Figures.notebook]]

Now attempt the questions and activities below. Rounding to significant figures. En Garde 1. How many significant figures are there in each of the following numerals? a) 2.1 b) 9.05  c) 7.305  d) 3.6  e) 0.002  f) 0.04  g) 0.00471  h) 0.5  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">i) 7001  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">j) 0.000000125  <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">k) 0.000000001 <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Rounding to significant figures. <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Grade or No Grade

<span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">2. Answer the next question on the website below. <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Rounding To 3 Significant Figures

<span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Rounding to significant figures. <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Walk The Plank

<span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">3. The population sign for Uralla says 2500 people. <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">How many significant figures do you think this number has? <span style="color: #000080; font-family: 'Comic Sans MS',cursive; font-size: 150%;">What is the minimum and maximum number of people that could live in Uralla so that the number would still round off to 2500?

<span style="color: #008000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">4. A newspaper article reported that 20 000 people attended the 'Carols By Candlelight' concert. How accurate would you expect this number to be? (i.e. how many significant figures would the number have?)

<span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Rounding to significant figures. <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 150%;">Fling The Teacher