4 (number) facts for kids

Kids Encyclopedia Facts

This page is about the number 4. For the year, see 4

Quick facts for kids

4

−1 0 1 2 3 4 5 6 7 8 9 →

← 0 10 20 30 40 50 60 70 80 90 →

four

Ordinal

4th
(fourth)

quaternary

2²

1, 2, 4

Δ´

IV

Roman numeral (unicode)

Ⅳ, ⅳ

Greek prefix

Latin prefix

100₂

11₃

Senary

4₆

4₈

4₁₂

4₁₆

δ (or Δ)

٤,4

۴

Ge'ez

፬

৪

Chinese numeral

四，亖，肆

Korean

넷,사

४

౪

൪

௪

ארבע (Arba, pronounced AR-bah) or ד (Dalet, 4th letter of the Hebrew alphabet)

Khmer

៤

Thai

๔

४

The number four is a number and a numeral. It comes after the number three, and before the number five. In Roman numerals, it is IV.

Mathematics

In mathematics, the number four is an even number and the smallest composite number. Four is also the second square number after one. A small minority of people have four fingers and four toes, on each hand and foot, respectively. This proves difficult to count on your fingers. Four squared is 16, and four doubled is 8.

Images for kids

x50px
Two modern handwritten fours
Four mugs

See also

In Spanish: Cuatro para niños

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4 (number) Facts for Kids. Kiddle Encyclopedia.