The Counting Cloth - Addition of 201 plus 319

Introduction

201 + 319
Lay them out:

Push them together:

Argh, we have lots of counters! We need to tidy up!

What can we reduce? Start at the bottom, there are five 1s.

Replace them with one 5.

There are two 5s.

Replace them with one 10.

There are five 100s.

Replace them with one 500.

And the answer is 520.