Learning resources > Divisibility
Divisibility Rules
Divisibility rules are used to determine if a number is divisible by another. We also use divisibility rules when it comes to knowing whether a number is prime or composite. Watch tutorials on divisibility rules and practice these exercises online.
Divisibility rules of 5
PRACTICE EXERCISES »

1
Divisibility Rules

Divisibility rules of 5 Divisibility rules of 10 Divisibility rules of 2 Divisibility rules of 2, 5 and 10 Divisibility rules of 3 Divisibility rules of 11 Divisibility rules of 9 Divisibility rules of 4 Divisibility rules of 3, 11, 9 and 4 Divisibility rules of 6 Divisibility rules of 8 Divisibility rules of 12 Divisibility rules of 6, 8 and 12 Divisibility rules of 7 Divisibility rules of 13 Divisibility rules of 7 and 13 Divisibility Rules. All together!

2
Prime Numbers

Prime numbers up to 50 Prime numbers up to 113 Prime numbers up to 200 Factorization and Prime Numbers

3
Factorization

Factorizing numbers up to 80 Factorizing numbers up to 150

4
HCF

Calculate the Highest Common Factor of 2 numbers.
Basic level
 Calculate the Highest Common Factor of 2 numbers.
Advanced level
 Calculate the GCD of 2 numbers.
Various types

5
LCD

Calculate the Lowest Common Multiple.
Basic Level
 Calculate the Lowest Common Multiple.
Advanced level
 Calculate the lcm.
With the 100 Square
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