Download presentation

Presentation is loading. Please wait.

Published byDamon Gordon Modified over 5 years ago

1
Significant Figures

2
Rules 1.All nonzeroes are significant 2.Zeroes in-between are significant 3.Zeroes to the left are not significant 4.Zeroes to the right are not significant unless they follow a decimal. 5.All numbers in scientific notation are significant 6.Exact numbers are obtained by counting or definitions such as 1 in = 2.54 cm, and are considered infinite in significance

3
Adding and Subtracting Always use the least significant decimal place. example: 1253.747 or + 1.1 1254.8 1253.757 + 1.1 = 1254.9 round up.0365578 -.00223 =.03433 or 3.433 X 10 -2

4
Multiplying and Dividing All ways go by the least number of significant figures. examples: 1253.747 X 1.1 =1379.1217 No only 2 sig figs, so 1400 or 1.4 x 10 3 120.0 ÷ 2.336589 = 51.3569 but this is rounded to 4 sig figs so 51.36

5
Combining the math 55.657 -55.654 X.033 = 4.54.000021806167 following the order of operations 55.657 - 55.654 =.003 which is reduced to 1 sig fig Then when finish the problem using multipling and dividing we must then use the 1 sif fig rule So our answer is.00002 or 2 x 10 -5

6
Give it a try 45.6632-45.6619 x 100 = 45.6632.002846931446 45.6632 – 45.6619 =.0013 which has 2 sig figs. so.0028

7
Logs what is the log of 111.1 = 2.0457 antilog of 123.2 = =10 123.2 =1.58489 x 10 123 =2 x 10 123

8
Which are Exact Numbers? 1 dozen eggs 25 students 1000 mm = 1 m 1 km = 0.621 mi 2.54 cm = 1 in 6.02213 x 10 23

Similar presentations

© 2021 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google