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Title: Significant Operations
Description: Explains how significant figures must be treated in operations
Description: Explains how significant figures must be treated in operations
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SIGNIFICANT FIGURES - Mathematical Operations
ADDITION AND SUBTRACTION:
When adding or subtracting numbers, count
the NUMBER OF DECIMAL PLACESto determine the number of significant figures
...
Example:
23
...
3324
(4 places after the decimal point)
+ 0
...
694633 (on calculator)
24
...
MULTIPLICATION AND DIVISION:
When multiplying or dividing numbers, count the NUMBER OF SIGNIFICANT FIGURES
...
Example:
23
...
3344 (5 significant figures)
30
...
855
(rounded to 5 significant figures)
IN THE LABORATORY:
Masses should always be recorded to as many places after the decimal point as are read off
the balance
...
10 mL Graduate cylinders should be read to the nearest
...
25 mL
and 100 mL graduate cylinders should be read to the nearest 0
...
Title: Significant Operations
Description: Explains how significant figures must be treated in operations
Description: Explains how significant figures must be treated in operations