Significant figures 2

Chemistry Level 1

Express the result of the following addition and subtraction to the proper number of significant figures:

67.314 + 8.63 243.198 , 67.314+8.63-243.198,

where all of the numbers are measured quantities.

168.25 -168.25 167.3 -167.3 167.256 -167.256 167.25 -167.25

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