Approximately four weeks (4 times 7 days) to a lunar month (synodic month = 29.54 days). Thus the number four is universally an integral part of primitive sacred calendars.

FOUR meaning: 1 : the number 4; 2 : the fourth in a set or series

The meaning of FOUR is a number that is one more than three. How to use four in a sentence.

Created by teachers, learn how to show 4 in a ten frame. Learn to draw 4 tally marks. See the number 4 with objects that sometimes come to life for a fun surprise!

Four is the second square number (a "square number" is an integer that can be written as the square of some other integer) and the second centered triangular number.

four (fôr, fōr), n. a cardinal number, three plus one. a symbol of this number, 4 or IV or IIII. a set of this many persons or things. Games a playing card, die face, or half of a domino face with four pips. …

Dec 9, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ४ (4)), a cursive form of four lines (to represent the number four) arranged in the shape of a cross (resembling …

4 Add to list Definitions of 4 noun the cardinal number that is the sum of three and one

Explore the curious properties of number 4, an even composite number composed of a single prime multiplied by itself. Includes mathematical info, prime factorization, divisors, bases and much more!

May 4, 2021 · The number 4 can be linked to numerology, superstition, important dates and so much more. Here are 10 facts about the number 4 that you should know.