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**.

- Pace to speed converter : pace_to_speed. The calculator allows you to convert a pace (time needed to cover 1 kilometer) into speed expressed in km/h.
- Amplitude of a complex number : amplitude. The amplitude calculator determines the amplitude of a complex number from its algebraic form.
- Number of arrangement of a set calculator : arrangement. To calculate online the number of arrangement of p elements of a set of n elements.
- Calculation of the monthly payments of the insurance of a credit : loan_insurance. Credit insurance monthly payment calculator: real estate credit, consumer credit, and other types of credit.
- Hours calculator : hours_calculator. Time calculator that allows you to make hourly calculations and time conversions using the h:min:s (hours, minutes, seconds) format.
- Time converter : time_converter. Time calculator that can convert durations into seconds, minutes, hours and days.
- Calculation of binomial coefficients : binomial_coefficient. A binomial coefficient calculator that allows you to calculate a binomial coefficient from two integers.
- To count the number of combinations : combination. To calculate the number of k elements of part of a set of n elements.
- Solving quadratic equation with complex number : complexe_solve. The complex number equation calculator returns the complex values for which the quadratic equation is zero.
- Complex conjugate calculator : complex_conjugate. The online conjugate calculator returns the conjugate of a complex number.
- Base-n converter : base_converter. The calculator allows you to make decimal, binary, hexadecimal conversions, and more generally to any base n between 2 and 36.
- Measurement conversions : convert. The measurement unit calculator allows online conversions volume, surface (area), length.
- Speed conversions : convert_speed. The speed converter allows online conversions to kilometers per hour, meters per second, miles per hour, feet per second, knots.
- Prime factorization calculator : prime_factorization. The function prime_factorization is used to calculate online the decomposition of an integer into prime factors.
- Quotient and remainder calculator : euclidean_division. The calculator allows to find online the quotient and the remainder in the euclidean division of two polynomials or two integers.
- Parity of a number : is_odd. Is_odd function returns true if the number passed is odd, false otherwise.
- Parity of a number : is_even. Is_even function returns 1 if the number is even, 0 otherwise.
- Factorial calculator : factorial. The factorial of a natural number n is the product of the positive integers less than or equal to n. The factorial calculator allows you to find this number.
- Calculation of the monthly payments of a loan : monthly_loan. Loan monthly payment calculator : home loan, consumer loan, and other types of loan.
- Complex modulus calculator : complex_modulus. The modulus calculator allows you to calculate the modulus of a complex number online.
- Complex number calculator : complex_number. The complex number calculator allows to perform calculations with complex numbers (calculations with i).
- Imaginary part of complex number : imaginary_part. The imaginary part calculator allows you to calculate online the imaginary part of a complex number.
- Real part of complex number : real_part. The real part calculator allows you to calculate online the real part of a complex number.
- Permutation calculator : permutation. To calculate online the number of permutation of a set of n elements.
- Gcd calculation online : gcd. GCD calculator that uses Euclid's algorithm to give the steps of the GCD calculation.
- Least common multiple : lcm. LCM calculator to calculate the least common multiple (LCM).
- Pythagorean theorem calculator : pythagorean. The calculator uses the Pythagorean theorem to verify that a triangle is right-angled or to find the length of one side of a right-angled triangle.
- Countdown solver : arithmetic_solver. This countdown solver allows finding a target number from a set of integer in using arithmetic operations.
- Average speed calculator : average_speed. The calculator returns a speed in km/h from a distance and a duration, or from a pace (duration necessary to cover 1 kilometer).
- Speed to pace converter : speed_to_pace. Pace calculator from a speed in km/h, the pace is the time to cover a distance, usually expressed in min/km or min/mile.

- Game multiplication by 10, 100, 1000 or 0.1, 0.01, 0.001 (numbers) : The goal of this quiz is to multiply a number by 10, 100, 1000 or 0.1, 0.01, 0.001. To win this game, you just have to find the right result in a list.
- Time conversion game (numbers) : This game allows you to practice making conversions on days, hours, minutes, seconds (d, h, min, s).
- Division game (numbers) : Online game of calculation, which allows practicing integer division.
- Criteria divisibility game (numbers) : Online calculation game, which allows to train to recognize if a number is divisible by 2, 3, 4, 5, 9, 10, 25, 100.
- Proportionality game (numbers) : The goal of this proportionality game is to find the value that completes a proportionality table.
- Find the denominator game (numbers) : In this fraction game, children must complete an equality involving a fraction by finding the missing denominator in a list.
- Measurement conversion game (numbers) : This math game allows you to practice converting length and area measurements
- Game about area calculations of usual figures. (numbers) : This game allows you to practice the calculation of simple surfaces: square, rectangle, circle.
- Duration calculation game (numbers) : This game on time calculations allows to practice manipulating durations expressed in days, hours, minutes, seconds (d, h, min, s).
- Calculation game percentages (numbers) : To succeed in this game on the calculation of the percentage of a whole number, kids must choose the good answer among a list of proposition
- Perimeter game (numbers) : This game allows you to practice calculating perimeters on common shapes: square, rectangle, triangle, circle.
- Four operations game (numbers) : This online game of mental calculation, allows to revise addition, subtraction, multiplication and division, It helps students in learning arithmetic operations.
- Missing operator game (numbers) : Online calculation game consisting of finding the missing operator in a mathematical expression.
- Fraction comparison game (numbers) : The purpose of this integer fraction comparison game is to find the operator (> or <) to place between the fractions being compared.
- Countdown game (numbers) : The goal of the countdown maths game is to find a target number using arithmetic operations from a list of given numbers.
- Quiz on the Pythagorean theorem (numbers) : This quiz uses the Pythagorean theorem to calculate the hypotenuse of a right triangle.
- Quiz on the calculation of the GCD (numbers) : This Greatest Common Divisor quiz gives practice in calculating the GCD of two integers.
- Multiplication game (numbers) : The goal is to choose from a list the multiplication that allows to calculate a given number online.
- Math game with integers (numbers) : In this calculation game with integers, kids must find the right answer in a list of values.
- The little math quiz (numbers) : The little math quiz collects a set of small fun math exercises to do online for 7-11 year olds.
- Fraction calculation game (numbers) : This math game is based on the calculation of whole fractions. To win this quiz, you just have to find the result of an operation between two fractions.
- Irreducible fraction of an expression (numbers) : To pass this quiz on irreducible fractions, you just have to find the irreducible form of an operation between several fractions.
- Times tables game (numbers) : Times tables game to revise and learn multiplication tables from 1 to 10 online.
- Three operations game (numbers) : Online mental calculation game, allows to review addition, subtraction and multiplication, this game helps students to practise arithmetic operations
- Missing number game (numbers) : Online calculation game: You must find the missing number in a mathematical expression.
- Number comparison game (numbers) : The goal of this integer comparison game is to find the operator (less than, greater than or equal to) to place between the numbers being compared.
- Addition tables game (numbers) : Addition tables game to learn, revise, memorize addition tables from 1 to 20 online.
- Magic square game (numbers) : The goal of the game is to complete a magic square that has empty areas.
- Fraction game (numbers) : Online fraction game suitable for anyone looking for a good math game online.
- Fraction to percentage transformation game (numbers) : In this game of transforming a whole fraction into a percentage, children must choose the correct answer from a list of suggestions.
- Subtraction tables game (numbers) : Online mental calculation game to help to memorize the subtraction tables.

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

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.

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`.

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** .

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