The below workout with step by step calculation shows how to find what is the average of numbers from 400 to 500 manually.
step 1 Address the formula and input values.
Formula: Average = Total Sum of Numbers / Total Count of Numbers
Input values:
The numbers from 400 to 500 are
400, 401, 402, 403, . . . . , 498, 499, 500
Total Count of Numbers = 101
step 2 Find the sum of numbers from 400 to 500.
sum = 400 + 401 + 402 + . . . . + 499 + 500
= 45450
step 3 Divide the sum by 101
Average = 45450/101
= 450
450 is an average of numbers from 400 to 500.