HiSET: Math : Measurement limitations
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Example Questions
Example Question #11 : Measurement Limitations
Subtract, adjusting for significant digits:
When subtracting numbers, accounting for significant digits, the difference must be rounded to the same place as the least precise of the numbers. 10.00 and 1.7889 have their final digits in the hundredths and ten-thousandths place, respectively; this makes 10.00 the less precise measurement, and the difference must be rounded to the nearest hundredth.
Now, subtract the numbers outright:
To the nearest hundredth, this is rounded down to 8.21, the correct response.
Example Question #11 : Measurement Limitations
Add, adjusting for significant digits:
When adding numbers, accounting for significant digits, the sum must be rounded to the same place as the least precise of the numbers. 2.3004, 0.64, and 0.307 have their final digits in the ten-thousandths, hundredths, and thousandths place, respectively; this makes 0.64 the least precise measurement, and the sum must be rounded to the nearest hundredth.
Now, add the numbers outright:
To the nearest hundredth, this is rounded up to 3.25, the correct response.
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