What is the GCF of 45 and 30?
The GCF of 45 and 30 is 15.
Steps to find GCF
- Find the prime factorization of 45
45 = 3 × 3 × 5 - Find the prime factorization of 30
30 = 2 × 3 × 5 - To find the GCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 3 × 5 - GCF = 15
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Related
Find HCF of: 90 & 60 135 & 90 15 & 10 225 & 150 9 & 6 315 & 210 90 & 30 45 & 60 135 & 30 45 & 90 225 & 30 45 & 150 315 & 30 45 & 210
GCF Calculator
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).