number

A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4 and so forth. A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (as with telephone numbers), for ordering (as with serial numbers), and for codes (as with ISBNs). In common usage, number may refer to a symbol, a word, or a mathematical abstraction. In mathematics, the notion of number has been extended over the centuries to include 0, negative numbers, rational numbers such as 1/2 and −2/3, real numbers such as √2 and π, and complex numbers, which extend the real numbers by adding a square root of −1. Calculations with numbers are done with arithmetical operations, the most familiar being addition, subtraction, multiplication, division, and exponentiation. Their study or usage is called arithmetic. The same term may also refer to number theory, the study of the properties of numbers. Besides their practical uses, numbers have cultural significance throughout the world.
Internet - principles of safe use of the network
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Internet

Added yesterday by Natalia

2

Internet - Rules for safe use of the network
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Internet

Added yesterday by Natalia

1

Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added week ago by andi

11

Security - Carefully download files from the network
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Security

Added 8 days ago by Daria J.

3

Security - Do not provide your personal data or passwords on the network
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Security

Added 8 days ago by Daria

3

Jigsaw puzzle - colorful jigsaw puzzle
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Jigsaw puzzle

Added month ago by andi

17

Giuseppe - How nice to make an online puzzle like this
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Giuseppe

Added 2 months ago by Ulisse

25

Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added 2 months ago by andi

27

Puzzle - SECRET GAMES, HEBRAJSKI LANGUAGE, RIDING, TIPS
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Puzzle

Added 3 months ago by KAKAKA

13

Secure Internet - It is a poster of the day of secure internet
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Secure Internet

Added 3 months ago by Internet

19

Jigsaw puzzle - complicated puzzle
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Jigsaw puzzle

Added 4 months ago by andi

21

SCRITTAJPG - Motivational phrase don Fabio Rosini
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SCRITTAJPG

Added 4 months ago by abc

11

Jigsaw puzzle - puzzle for the patient
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Jigsaw puzzle

Added 4 months ago by andi

21

Bone and coupons - colorful puzzle jigsaw
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Bone and coupons

Added year ago by andi

21

State flags - complicated puzzle
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State flags

Added year ago by andi

14

Coding - Game for children. Coding and mathematics. Logic games.
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Coding

Added year ago by KIN

26

Logic puzzle - Logic puzzle to solve at school.
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Logic puzzle

Added year ago by KIN

53

School with class - School with Class is one of the largest and most recognizable nationwide social campaigns, conducted
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School with class

Added year ago by szk

169

Html code - puzzle - Why do I have to write here 20 characters. what do you mean.
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Html code - puzzle

Added year ago by noja

8

olimpia elblag - logo of the olimpia elblag sports club
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olimpia elblag

Added year ago by dziadu

76 1

proverb - so you can stay without teeth
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proverb

Added year ago by Hala

7

frase famiglia - la famiglia è importante
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frase famiglia

Added year ago by Andrea

17

saying - Such a dream
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saying

Added year ago by Halina

17

Karol Sevilla - Karol Sevilla – meksykańska aktorka, znana z udziału w serialu La Rosa de Guadalupe. Jest także
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Karol Sevilla

Added year ago by Kamcia2

11

Cris-Fede - il puzzle è il regalo di compleanno
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Cris-Fede

Added year ago by Cristian

31