Class 10 Mathematics | Sum of Arithmetic Series

Mathematics, Class 10: Sequence and Series

Sum of an Arithmetic Series

Pairing terms · Two sum formulas · Salary and income

By the end of this lesson you can

➕

Tell a sequence from a series

🔁

Derive the sum formula by pairing

🧮

Find sums with the formula

🔍

Work back to n, d or a from a sum

💰

Solve salary and income problems

📋Arithmetic sequence

A list of numbers

3, 7, 11, 15, 19

Separated by commas

➕Arithmetic series

A sum of the terms

3 + 7 + 11 + 15 + 19

Total = 55

The notes are free to read in full.

Presenter notes: Today we learn how to add a long arithmetic series quickly, without adding the terms one by one.