To find the sum of the numbers from 1 to 100, we can use the formula for the sum of an arithmetic series:

Sn = (n/2)(a + l)

Where Sn is the sum of the series, n is the number of terms, a is the first term, and l is the last term.

In this case, n = 100, a = 1, and l = 100.

Plugging these values into the formula, we get:

S100 = (100/2)(1 + 100)
= (50)(101)
= 5050

Therefore, the sum of the numbers from 1 to 100 is 5050.