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Add the following and answer with the correct number of significant figures: 13.4 + 2.4 = _________.
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15.12
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15.80
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15.69
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15.92
That's Correct!
It's Wrong!
When adding 13.4 and 2.4, both numbers have 1 decimal place. According to the rules for significant figures in addition, the result should be rounded to the least number of decimal places present in the numbers being added. Adding 13.4 and 2.4 gives 15.8. Since both original numbers have 1 decimal place, the final answer is also rounded to 1 decimal place, resulting in 15.8.
