Considering significant figures, what will be the correctly rounded result of 21.16 + 5.5?
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A.
16 + 5.5? Ans 1. 26.60
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B.
26
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C.
26
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D.
26.7
Correct Answer:
D. 26.7
Explanation:
When adding 21.16 and 5.5, the rule for significant figures in addition requires the result to be rounded to the same number of decimal places as the value with the fewest decimal places. Since 5.5 has only one decimal place, the sum (26.66) must be rounded to the tenths position. Rounding 26.66 to one decimal place results in 26.7.
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