These numerous mathematical resources (calculators, quizzes, games, exercises) allow you to practice calculating with different types of numbers: integers, decimal numbers, rational numbers, real numbers, irrational numbers, complex numbers. These numerous mathematical resources (calculators, quizzes, games, exercises) allow to practice solving equations.

## Numbers : games, quizzes and exercises

Game multiplication by 10, 100, 1000 ...
Division game (numbers)
Criteria divisibility game (numbers)
Proportionality game (numbers)
Find the denominator game (numbers)
Measurement conversion game (numbers)
Game about area calculations of usua ...
Calculation game percentages (numbers)
Perimeter game (numbers)
Four operations game (numbers)
Missing operator game (numbers)
Fraction comparison game (numbers)
Countdown game (numbers)
Quiz on the Pythagorean theorem (num ...
Quiz on the calculation of the GCD ( ...
Multiplication game (numbers)
Math game with integers (numbers)
Fraction calculation game (numbers)
Irreducible fraction of an expressio ...
Times tables game (numbers)
Three operations game (numbers)
Missing number game (numbers)
Number comparison game (numbers)
Magic square game (numbers)
Fraction game (numbers)
Fraction to percentage transformatio ...
Subtraction tables game (numbers)

## Numbers : Reminder

### Prime numbers

A prime number is an integer greater than or equal to 2 that has no divisors other than 1 and itself.

#### Decomposition in product of primes

Any integer greater than or equal to 2 is prime or product of primes.
When we write an integer as a product of prime numbers, we say that we decompose this integer into a product of prime numbers.

### Percentage

A percentage is defined as a proportionality coefficient expressed as a fraction with a denominator of 100.

To calculate p% of a number is to multiply that number by p/100.

### Euclidean division

Performing Euclidean division of a by b, is equivalent to determining two numbers, the quotient (q) and the remainder (r) such that a = b*q + r .