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Guidelines for using significant figures

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Any digit that is not zero is = not significant/significant   Significant  
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How many significant figures does 845 cm has?   3 significant figures  
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How many significant figures does 1.234 kg has?   4 significant figures  
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Zeros between nonzero digits are not significant or significant?   Significant  
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How many significant figures does 606 m has?   3 significant figures  
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How many significant figures does 40,501 J has?   5 significant figures  
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Zeros to the left of the first nonzero digits are significant/not significant?   Not significant  
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How many does significant figures does 0.08 L contain?   1 significant figure  
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How many significant figures does 0.0000349 g has?   3 significant figures  
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Numbers greater than one, all the zeros to the right of the decimal point are not significant/significant.   Significant figure  
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How many significant figures does 2.0 mg has?   2 significant figures  
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How many significant figures does 40.062 mL has?   5 significant figures  
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How many significant figures does 3.040 dm has?   4 significant figures  
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A number than is less than 1, then the only zeros that are at the end of the number and the zeros are between nonzero digits are not significant/significant   Significant  
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How many significant figures does 0.090 kg has?   2 significant figures  
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How many significant figures does 0.3005 J has?   4 significant figures  
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How many significant figures does 0.00420 min has?   3 significant figures  
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Numbers that do not contain decimal points, Trailing Zeros after the last nonzero digit ___ or ___ ___ be significant.   May or may not be significant  
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Numbers that do not contain decimal points, Trailing Zeros after the last nonzero digit may or may not be significant. example 400   1 significant figure  
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How many significant figures does 40 has?   2  
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How many significant figures does 400 has?   3 or 1  
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What is another way to write out 400 as a significant figure?   4 x 10^2  
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Significant Figure - Addition & Subtraction - Significant figures to the right of the decimal point in the final sum or difference is determined by the ______ number of significant figures to the right of the decimal point in any of the original numbers   Lowest  
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Significant Figure - Division & Subtraction -    
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