Class 10MathematicsArithmetic Progressions

Sum of First n Terms of an AP

The sum formula compresses long repeated addition into a neat algebraic rule. Students should know both the general sum formula and the version using first and last term.

How to study this topic

Read the core explanation once without solving.
Open the formula links below and connect them with the topic meaning.
Practice the 10 example pages one by one.
Use the AI ask page for text, voice or image-based doubts.

10 example pages

Concept check 1

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on concept check and show the working clearly.

Definition to application 2

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on definition to application and show the working clearly.

Formula warm-up 3

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on formula warm-up and show the working clearly.

Reasoning practice 4

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on reasoning practice and show the working clearly.

Board-style short answer 5

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on board-style short answer and show the working clearly.

Mistake correction 6

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on mistake correction and show the working clearly.

Visual interpretation 7

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on visual interpretation and show the working clearly.

Applied word problem 8

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on applied word problem and show the working clearly.

Revision challenge 9

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on revision challenge and show the working clearly.

Exam recap 10

For Class 10 Mathematics, explain or solve a sum of first n terms of an ap question from the chapter "Arithmetic Progressions". Focus on exam recap and show the working clearly.