College Algebra / Unit 1 Alg 002 short lesson, about 20 seconds
Natural Numbers and Whole Numbers
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The idea
The natural numbers are the counting numbers 1, 2, 3, and so on; the whole numbers are the natural numbers plus zero.
In practice
Counting the coins in a jar uses natural numbers; reporting an empty jar takes zero — a whole number that counts nothing.
Where people slip
Zero is a whole number, not a natural number.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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