Answer:
A. 0.25 inches
B. 0.125 inches
Explanation:
A.
The smallest increment is represented by 1/4. Converting this into decimal form would make this 0.25.
Work:
1/4 = x/100
1 × 100 = 4 × x
100 = 4x
25 = x
25/100
0.25
B.
The uncertainty is what is not labeled on the ruler. We know 0.25 (1/4), 0.50 (2/4), and 0.75 (3/4) are labeled on the ruler. Out of all the options, 0.125 is not labeled. Therefore, 0.125 is the uncertainty.