Question

A thermometer measures temperature to the nearest 0.5°C which measurement shows an appropriate level of precision for the thermometer.

A.21.55°C
B20°C
C.16°C
D16.0°C

Answer 1

C, 16

Explanation:

Answer 2

D

Explanation:

To the nearest 0.5°C means basically 1 digit after the decimal point.

0.5 has 1 digit (5), after the decimal point. To the nearest 0.5 means that the answer should have 1 digit after the decimal point.

For example, if we were to round 14, to the nearest 0.5, we would need to write it as 14.0 (with 1 digit after decimal).

Now, looking at the answer choices, we eliminate A because it has 2 digits after decimal. We eliminate B and C because there is NO DIGIT after decimal. And we accept D, because it has 1 digit after decimal. Hence, this is correct to the nearest 0.5°C.

Answer is D