Grade 6 Factoring Worksheets: GCF & LCM
These math worksheets cover factoring to prime numbers, divisibility rules and finding the greatest common factor (GCF) or least common multiple (LCM) of two or three numbers.
Prime Factors | |
| Prime factors (#'s < 400) | 32: 2x2x2x2x2 |
| Prime factors (#'s < 1,000) | 214: 2 x 107 |
| Factor trees & division method |  |
| Prime factors using exponents | 144: 24 x 32 |
Greatest common factors | |
| Find the GCF of 2 numbers | GCF of 21, 35 is 7 |
| Find the GCF of 2 numbers (<1,000) | GCF of 120, 110 is 10 |
| Find the GCF of 3 numbers | GCF of 6, 21, 84 is 3 |
Least common multiples | |
| Find the LCM of 2 numbers | LCM of 3, 4 is 12 |
| Find the LCM of 2 numbers (<200) | LCM of 16, 120 is 240 |
| Find the LCM of 3 numbers | LCM of 4, 7, 14 is 28 |
More | |
| Mixed GCF and LCM problems | |
| Divisibility rules | |
Sample Grade 6 Factoring Worksheet
