Taking into account the significant figures, what is the value of 9.99 m - 0.0099 m?
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Question

Taking into account the significant figures, what is the value of 9.99 m − 0.0099 m?

G1 Physics · Accepted Answer

Step 1: 9.99 − 0.0099 = 9.9801 m. Step 2: For subtraction, retain the least number of decimal places among the measured values; 9.99 m has two decimal places. Step 3: Thus the result is 9.98 m. Final: Hence option A.