3. Using Ratio Tables
Sign In
Find the product of the common prime factors.
8
The greatest common factor (GCF) is the greatest number that is a factor of two or more numbers. The first step for finding a GCF is to break down each number into its prime factors. We will write down all of the prime factors that are common between the given numbers.
| Given number | Prime Factorization | Common Prime Factors |
|---|---|---|
| 8 | 2 * 2 * 2 | 2, 2, 2 |
| 16 | 2* 2* 2* 2 | 2, 2, 2 |
For the given values, the common prime factors are 2, 2, and 2. The next step is to calculate the product of these factors. 2* 2* 2 =8