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What do you use significant figures for?
when rounding you want to choose an answer with the lowest significant figures to have a better answer choice
How many significant figures are needed when multiplying two numbers?
It depends on the number of significant figures from two numbers you are multiplying. But when multiplying you use the same number of significant figures from the numbers you are multiplying with the LEAST number of significant figures. Example: 92,873.239 * 2 = 200,000 (because the number 2 has only 1 significant figure even tho 92,873.239 has 8 significant figures your answer still only has 1 significant figure)
How many significant figures are in 3.040?
Four, if you assume that the final zero is not there simply to use up space!
How many significant figures are in 1.0200 X 10kg?
Assuming that the trailing 0s are not there simply to use up ink, the answer is 5.
How do you use significant digits to determine how to report a sum or product of two measurements?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
