How to determine significant figures

In this lesson we will study what significant figures are and how they work

A significant figure in science is a number that serves for more than just a place holder and that the removal of this number in the problem causes its value to change

Example

33.5648

Has 6 significant digits and the removal of anyone of these causes the value to change

33.56480

still has six because if remove the 0 the value is unchanged

1.001

1.001 has four significant figures

Now there is more to it than just the stated definition that was just the first part if you can change the unit of measurement to remove the zeros then those are not considered significant

Example
.001

According to the first definition this has three SF's but actually it only has one because lets say it were
.001 meter if i change it to millimeters it is 1mm and that only has one significant figure

Basically if there is no numerical value before the zeroes then they are not significant because it is assumed that you could change the measurement to get rid of the zeroes





Here is Some Practice for y'all if you cannot figure out comment I will respond


39.67 = How many Sf's
41.0025= How many sf's

.000237= How many sf's