Practice figuring out the sum of finite arithmetic series.
You might need: Calculator

Problem

sum, start subscript, k, equals, 1, end subscript, start superscript, 800, end superscript, left parenthesis, minus, 8, k, plus, 109, right parenthesis, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i