How many Sig Figs?
How many significant figures are in 104.3?
4 Significant Figures. (Captive zeroes are counted as significant figures)
Bill measured the width of the doorframe in inches using a typical yardstick. Will his measurement be exact or inexact?
As Bill is performing a measurement, his answer will be an inexact measurement.
1.0+ 2.06= ???
3.1 (1.0 only goes to tenths place, restricting the answer to the tenths place)
2000 meters is measured with three significant figures of accuracy. Express this number in a way to clearly communicate how many sig figs it actually has.
1) 2.00* 103 meters
2) 2000 meters
These are both viable ways to express this measurement.
How many significant figures are in 100.01?
There are five significant figures.
A foot is 12 inches. In this context, is 12 in. exact or inexact?
As a definition (and not a measured number), 12 inches is exact.
There are three feet in a yard. In this context, how many sig figs does 3 ft. have?
In this context (as a definition), 3 ft. is an exact number, having infinite sig figs.
Explain the significant figure rules for zeroes.
Leading zeroes are not significant. However, ending zeroes and captive zeroes are significant.
How many significant figures are in 0.0190?
There are three significant figures.
(The first two zeroes are not significant.)
Jerry's GPS says he is traveling 75 MPH. Is this number exact or inexact?
This number is inexact.
4.56/2= ???
2
How many sig figs are in 05000.00000?
There are nine sig figs.
How many significant figures are in 015.0190?
There are six significant figures.
The speed limit along part of 35E is 65 MPH. Is this number exact or inexact?
This number is exact.
3.1415 X 400.1= ???
1257 (4 sig figs)
How many sig figs are in 001056000?
There are six sig figs. Drawing a large under the last significant digit is one way of indicating the amount of sig figs. However, this might be better written: 1.05600* 106.
How many significant figures are in 010059.0190?
There are nine significant figures.
The 400 meter dash is an Olympic event. Is this number exact or inexact?
This number is a definition and therefore exact. However, there is some merit in answering inexact, when considering the measured distance of 400 m.
1.24- 0.759= ???
0.48
How many sig figs are in 5.0500* 10-8?
There are 5 sig figs. Scientific notation is a common way to write very large or small numbers with the correct amount of sig figs.