Counting significant digits when measurements are multiplied or divided

When multiplying or dividing, make sure you know how many sigfigs are in your factors. The factor with thes least amount of sigfigs is the one you want to know. When you get your final answer, make sure you have the same amount of sigfigs that the factor had.

Example

34.07 has 4 sigfigs

6.4 has only two

34.07x6.4=218.048

But we only want two sigfigs so 218.048 becomes 220