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Your numbers are correct! For more information about rounding and sig figs in general, the link on Dr. Lavelle's website is short and really helpful. https://lavelle.chem.ucla.edu/wp-conten ... OUT_SF.pdf
The way you rounded it is correct. I also get nervous when rounding numbers with sigfigs like that. But you should remember to round only at the end when you have your answer because rounding in the intermediate steps could cause you to get the wrongs answer.
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