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 ?

## Answer this Question

## Related Questions

- Calculus - Match the rule with the title: ____ 3. d/dx [f(x)/g(x) ]=(g(x) f^' (x...
- 4th grade - Exploring Algebra: What's the rule? You can find patterns to figure ...
- Product Rule - Can someone please help me with this? f(x)=(x-2)^1/2 * (x^2-3)^3 ...
- Math (Algebra) - Could I have someone check my work please? If I did something ...
- Physical Science - If one measurement is known much more precisely than the ...
- chemistry - The simple rule “Like dissolves like” is often used to describe the ...
- PHILOSOPHY REPOST - need to apply the moral theory of rule utilitarianism in my...
- GUESS MY RULE WITH LETTERS - I CAN`T FIND OUT WHAT THE RULE IS I KNOW THAT THE ...
- Maths C - I need to compare and contrast Weddle's Rule and Simpson's rule and ...
- English - We have been given a list of words and have to write the plural of ...