Question

This year, a teacher graded 83 more final exams than last year. If the teacher graded 625 final exams this year, how many final exams did the teacher grade last year?

Answer 1

542,

Explanation:

You could solve these types of problems with inverse operations, so if you subtract 83 from 625, you'd get 542.

Answer 2

542

Explanation:

So X is the number of finals graded by teacher last year

she graded 83 more finals than the last year

and the total number of finals she graded this year is 625 so we have an equation

X + 83 = 625

and as you solve it for X

X = 625-83

x = 542