Posted by Amy on Friday, August 26, 2011 at 5:05pm.
Can someone explain this rule in simple english please? "Rule for addition and subtraction: The rightmost significant figure in a sum or difference will be determined by the least accurate measurement."
Example: 18.56 m
 13.2 m
__________
5.36 m = 5.4 m

Physical Science  drwls, Friday, August 26, 2011 at 5:10pm
The least accurate measurement is the 13.2 m in this case. Its accuracy is only +/ 0.05.
Therefore the difference should be quoted with the same number of significant digits. In this case, it is the first number after the decimal point.

Physical Science  Davis, Friday, August 26, 2011 at 7:54pm
addition&subtraction= round to least number of decimal places
multiplication&division=round to least number of significant figures present.

Physical Science  brandy, Sunday, June 24, 2012 at 6:07pm
Suppose you are playing ice hockey in the middle of a totally frictionless frozen pond. How can you move yourself to the edge of the pond ?
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