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.

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

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.

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 on each hand and …

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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 …

Noun 1. 4 - the cardinal number that is the sum of three and one IV, Little Joe, quadruplet, quartet, quatern, four, quaternion, quaternity, tetrad,...

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!

Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.

Oct 19, 2023 · Explore fascinating facts about the number 4. Discover its significance in various cultures, including its symbolism and representations in numerology, astrology, and mythology.