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Find the factors
★★★Factors of 12 divide it exactly: 1, 2, 3, 4, 6, 12.
Decimal Mountain · Learn first
Example
Which is NOT a factor of 42?
42
Answer: 34
Factors and multiples · Numbers & Operations
Find factors and multiples, GCF and LCM: the foundation for common denominators.
Factors of 12 divide it exactly: 1, 2, 3, 4, 6, 12.
This is step 1 of unit 1, “Factors and multiples”, in Stage 6: Factors, common denominators, multiplying fractions and decimals, area (ages 12). A round has 10 problems; 90% or better earns three stars. Everything is free with no sign-up, and your stars and XP are saved on this device.