You may also like

problem icon

Picturing Square Numbers

Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?

problem icon

Sums of Powers - A Festive Story

A story for students about adding powers of integers - with a festive twist.

problem icon

Slick Summing

Watch the video to see how Charlie works out the sum. Can you adapt his method?