167
Subtraction means distance on the number line. From 49 to 100 is 51, from 100 to 200 is 100, and from 200 to 216 is 16. Therefore, 216 - 49 = 51 + 100 + 16 = 167. --- Alternately, 49 - 50 - 1, so subtracting 49 is equivalent to subtracting 50 and then adding 1. 216 - 50 = 166, and 166 + 1 = 167.