1) Explain why 27 is not a prime number. 2) Find all the factors of 40. 3) Find the prime factors of 40. 4) Find the lowest common multiple of 4 and 5. 5) Find the highest common factor of 12 and 88. 6) Which numbers between 30 and 40 are prime numbers? 7) Write 72 as a product of its prime factors. 8) Simplify 48/64 as far as possible. 9) What decimal is the same as 7/10? 10) Write 2/7 as a recurring decimal.

Leaderboard

Visual style

Options

Switch template

Continue editing: ?