Factors, multiples and prime numbers worksheets Grades 4–5
Divisibility rules, factor pairs, prime and composite numbers, prime factorization, GCF and LCM.
- Divisibility rulesUse the rules for 2, 3, 5, 9 and 10 to decide which numbers divide a number.
- Factor pairsList every pair of numbers that multiply to make a number.
- Listing factorsList every factor of a number in order from smallest to largest.
- Prime and composite numbersDecide whether each number is prime or composite.
- Prime factorizationBreak each number into a product of prime numbers.
- Greatest common factor (GCF)Find the largest number that divides both numbers.
- Least common multiple (LCM)Find the smallest number that both numbers divide into.
- GCF and LCM mixed practiceMixed greatest common factor and least common multiple problems. Read each one carefully.
Unit packet
One two-sided worksheet for every topic, then the unit test, with the answer key at the back. Fresh each time.
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Unit test
Two problems from every topic. Pass it and move up to the next unit.
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