Number Theory: Factors, Multiples, LCM & GCF (Grade 7) - Set B
Prime factorisation, factors, multiples, and finding LCM and GCF.
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Grade 7 · Math worksheet
Name
Date
Math
Number Theory: Factors, Multiples, LCM & GCF
Factorise, list factors and multiples, and find the LCM and GCF.
- 1.Write the prime factorisation of 90.
- 2.Write the prime factorisation of 66.
- 3.Write the prime factorisation of 22.
- 4.Write the prime factorisation of 19.
- 5.Write the prime factorisation of 32.
- 6.List all the factors of 38.
- 7.List all the factors of 43.
- 8.List all the factors of 21.
- 9.List all the factors of 23.
- 10.List the first 5 multiples of 5.
- 11.List the first 5 multiples of 8.
- 12.List the first 5 multiples of 8.
- 13.Find the GCF (greatest common factor) of 15 and 20.
- 14.Find the GCF (greatest common factor) of 42 and 36.
- 15.Find the GCF (greatest common factor) of 47 and 33.
- 16.Find the GCF (greatest common factor) of 17 and 34.
- 17.Find the LCM (least common multiple) of 8 and 6.
- 18.Find the LCM (least common multiple) of 6 and 7.
- 19.Find the LCM (least common multiple) of 5 and 12.
- 20.Find the LCM (least common multiple) of 6 and 3.
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