Calculate the prime numbers between two limits. It uses a deterministic test.

Calculate the factors of any number with a single click. 99¢ only.

Test any number for primality with a single click. 99¢

MS Word add-on that provides a faster way of editing mathematical equations

Primary 5 English, Maths & Science test papers. 3000 quizzes to practice.

For students aged 7 - 9 in Primary 1 - 3. 1500 maths quizzes & problems sums

For students aged 10 - 12 in Primary 4 - 6. 2000 maths quizzes & problems sums

Primary 3 English, Maths & Science test papers. 2500 quizzes to practice.

Primary 2 English and Maths test papers. 1500 challenging quizzes to practice.

Primary 1 English and Maths test papers. 1500 challenging quizzes to practice.

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Primary 6 English, Maths & Science test papers. 3000 quizzes to practice.

The puzzle world"s best-kept secret - see why millions prefer it to Sudoku!

Play darts and create sports schedules. Automatic scoring. Lottery no picker.

For publishing Mathematical and Scientific equations.

CPU is a Cost Per Unit calculator to assist in deciding product / packet value

Instantly convert between binary, octal, decimal and hexadecimal number systems.

Do not make war, but play Matego and improve your math!

Find the prime factors and closest primes of any integer up to one billion (US)

Learn letters and numbers