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Significant Figures Rules

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An introduction to the four basic rules for determining Significant Figures.

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I got asked ladies and gentle people the Bell has rung before class has begun therefore you should have seen it in your seat ready and excited to learn about significant so let me hear you get excited significant figures are in this sentence we are going to be manipulating data at a significant figures work the basic idea significant figures is they are the digits in your number that were actually measured plus one estimated digit for example we can measure the length of this dry erase marker to 132 mm and we can actually estimate. measurement is one tenth of a millimeter less than 132 or 131.9 mm is to know how many significant digits you have that comprise your significant figures are the basic rules in I understand but I have yet to find any two science textbooks that have the exact same rules of significant figures however they all amounts to the same thing so here are my rules of significant figures all nonzero digits are significant rule number two zeros between significant digits are significant there for Billy how many digits the numbers 70.2 are significant the seven and the two are significance because they are nonzero and the zero is significant because it is between two other significant digits 70.2 nonzero digits are not significant digits in the number 045 RC navigate to four and five are significant because they are nonzero and both zeros are not significant because they are to the left of the 47.2 is it busy what are the lengths of the two when they're bored not significant turns out that the second rule Trump's the third rule 0 and 70 point significance because it is between two significant digits zeros at the end of a number are only significant if they are to the right of the decimal point for both how many significant figures in the number 70.0 three zero to the right of the decimal is significant because it is at the end of the number and to the right of the decimal and a zero to the left of the decimal is significant because it is between two significant digits I'm going to put numbers on the board and call an individual's to tell me how many significant figures are in each number and if you do not understand an answer it is your responsibility to ask 7 to 101 Bobby 706 3 400.0 or what is 0.00 Bobby 0.0020 5 / it is your responsibility when you do not understand something I won't always correct mistakes as we make them because it is important that we made mistakes so that we can recognize our mistakes so that we can learn from our mistakes zeros are not significant in 0.002 because they are the wax of a nonzero number between 6 so there was only once a 0.002 and the only zero is significant 0.0020 is zero on the far right because it is to the right of a nonzero number for 7 or 02 Billy 100 4020 please realize that if you understand all of these examples and you understand all of the rules of significant figures congratulations now let's work the other direction don't how would you illustrate the number 1203 significant just put a decimal after the last zero wouldn't that be for figures that's for you scientific notation so it need to be 1 Point * 10 to the 3rd power write yes 1.20 has three significant figures find by 10 to the 3rd power or 1000 makes it 1200 Bobby how would we write 0.002 significant figures 10 in scientific notation that would be 2.00 x 10 to the negative 3 2.0 0 4 3 6 bags and x 10 to the negative 3 because we need to move the decimal places to the left you just write 0. 000.00 200 does have three significant figures however I asked for it also in scientific notation what is my introduction to significant figures thank you very much I enjoyed learning with you

Uploaded by Shawn Mize.

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