Mathematics for IGCSE & O level - Limits Of Accuracy (Section 1 - No. 39)
Given that p = 5.1 and q = 8.6, both correct to 1 decimal place, work out the smallest possible value of p - q.
-3.5
-3.4
-3.55
-3.65
Forklaring
The lower bound of p is 5.05 and the upper bound of q is 8.65. Thus p-q = 5.05 - 8.65 = -3.6