Question

Four students measure the mass of an object, each using a different scale. They record their results as follows: A: 49.06g, B: 49g, C: 50g, D: 49.2g. Which student used the most precise scale?

a. Student A
b. Student B
c. Student C
d. Student D

Answer 1

Student A used the most precise scale to measure the mass of an object, measuring to the nearest hundredth of a gram (0.01g).

Step-by-step explanation:

The student who used the most precise scale in measuring the mass of an object is Student A, with a measurement of 49.06g. Precision refers to the degree of refinement in the performance of an operation or the degree of exactness in the measurement of quantity. Student A's scale is more precise than the others because it measures to the nearest hundredth of a gram (0.01g), while the other scales measure to the nearest gram or tenth of a gram (1g or 0.1g).