Arithmetic Sequences


an arithmetic sequence or progression, is a sequence where each term is calculated by adding a fixed amount to the previous term.

an arithmetic sequence has a first term, a, and a common difference, d.

Key Skills

  • determine whether a sequence is arithmetic.
  • find the first term and the common difference.
  • find the formula for the general term and use if to find specific terms of a sequence.


arithmetic sequencearithmetic progressionsequencecommon differencegeneral term