Significant Figures Flashcards
(8 cards)
1
Q
What set of numbers are always significant?
A
1-9
2
Q
Interior zeros are
A
Significant
Ex: 1001 = 4 sf
3
Q
Trailing decimal zeros are
A
Significant
Ex: 12.00 = 4 sf
4
Q
Zeros at the end of whole number integers
A
Not significant
Ex: 420 = 2 sf
Ex: 420.0 = 2 sf
Ex: 420. (this notation is not used often)
5
Q
Leading decimal zeros are
A
Not significant
Ex: 0.0001 = 1 sf
Ex: 0.1001 = 4 sf
6
Q
What types of numbers have infinite sf
A
Exact numbers
Ex: Counting numbers (12 eggs in a dozen)
conversion factors
Constants
7
Q
Multiplying/Dividing Rule
A
The answer has to lowest number of sf
Ex: 9274.5*1.0 = 9300
8
Q
Adding/Subtracting
A
The answer has the same number of decimal places as the number with the lowest decimal places
Ex: 27.5-1.405 = 26.1
