← Arithmetic Course
UNIT 2 · LESSON 3

Adding Multi-Digit Numbers

Understand addition as combining quantities and measuring increases.

WHY LEARN THIS?

This idea has a purpose.

Mathematics becomes much easier when you understand what a tool was designed to accomplish. This lesson will build Adding Multi-Digit Numbers from the idea itself instead of asking you to memorize a rule first.

Places this kind of mathematics can appear:

shopping totals
paychecks
scores
inventory
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