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OpenStudy (anonymous):

Would the sum of 5.7 cm and 6.2 cm need to be rounded? Why or why not?

OpenStudy (anonymous):

this is a adding case, as i just answered in your next question, this depends on the given number with the least decimal places. in this case, 5.7 + 6.2 =11.8. since the least decimal place is to the tenth, you don't have to round it. the final answer is 11.8 cm with 3 sig. dig.

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