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Arithmetic
Algebra
Geometry
Functions
Many Variables
Probability and Statistics
Practitioners
Counting
Addition
Multiplication
Subtraction
Division
Powers
Constructing Numbers
Number as Matching
Pebbles of Various Sizes
Digits
Carry Overs
Units
Base Representations
Largest Number
Table of Contents
About
Resources
Notes
Settings
FAQ
Index of Content
Support
Carry Overs
explaining with bags where we automatically move over when we have ten pebbles
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Number as Matching
Pebbles of Various Sizes
Digits
Carry Overs
Units
Base Representations
Largest Number