IGCSE Maths / Sequences and series

Arithmetic series problem solving

Edexcel International GCSE Maths (4MA1), chapter 9: Sequences and series, specification point 3.1c. Part of the full course.

Read the revision notes · IGCSE Maths past papers

Arithmetic sequences can model situations where an amount increases by the same step each time. Use the term rule for one position and the sum formula for a total, including when you need to work backwards to find how many terms there are.

More lessons in Sequences and series

• Number sequences and term-to-term rules
• Finding a rule for a sequence
• Arithmetic sequences, a and d
• The nth term of an arithmetic sequence
• Using the nth term formula in reverse
• Finding a and d from two terms
• The sum of an arithmetic series