counting numbers
One, two, three...
Counting numbers are the positive integers used for counting objects: 1, 2, 3, and so on.
The term appears mainly in elementary mathematics education, where it helps distinguish these basic numbers from zero, negative numbers, and fractions.
Whether zero counts as a counting number varies by textbook—some say yes, most say no.
- threeSum of one twice
- twoNumber after one
- sevenFourth prime number
- eightNumber after seven
- fiveFour plus one
abacus · enumeration · how many · tally marks · one two three · digits · place value · one · base ten · mathematics · four · six · numerals · hundred · ordinal · calculations · preschool · tally
- number typesintegers, fractions, decimals, primes, evens
- number setsintegers, rationals, primes, perfect squares, fractions
- numberingstudent IDs, license plates, postal codes, zip codes, area codes
- numerals0, 1, 2, 3, 4
- number systemsdecimal, binary, octal, hexadecimal, Roman numerals
- seriesseries, sum, sequence, geometric series, arithmetic sequence
counting numbersnegative numbers
Values less than zero
fractions · irrational numbers · imaginary numbers · complex numbers · non-integers
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