Back to Quantities — Problem 6 · Task Set 29

HSN.Q Tutor Intake — Units, Quantities, and Accuracy

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Grade 9·13 problems·~15 min·Common Core Math - HS Number and Quantity·domain·q

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Procedures

A student adds two measured lengths: 1,000 m (measured to the
nearest meter) and 1.23 m (measured to the nearest 0.01 m).
Applying the correct significant-figure rule for addition, what
should the sum be reported as?

1,001.23 m (6 significant figures — same as more precise addend)

1,000 m (1 significant figure — same as least-precise sig-fig count)

1,001 m (rounded to the ones place — same decimal precision as 1,000 m)

1,001.2 m (rounded to 1 decimal place — same as 1.23 m)