What two numbers have a GCF of 670?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 670.

There is actually an infinite number of answers to this question. First, note that both the numbers we are looking for must be multiples of 670. Below is the beginning list of multiples of 670 (1 through 7) in numerical order.

1. 670
2. 1340
3. 2010
4. 2680
5. 3350
6. 4020
7. 4690
etc...

Two numbers that have a GCF of 670 can be 670 and any other number on the list above. Thus, two numbers that have a GCF of 670 are:

670 & 1340
670 & 2010
670 & 2680
etc...

That is not all! Any combination of any multiple of 670 and "odd" multiples of 670 will also have GCF of 670. We numbered the multiples above so it would be easy to identify the "odd" multiples (number 1, 3, 5, 7, etc). Thus, here are some more examples of two numbers that also have a GCF of 670.

1340 & 2010
1340 & 3350
2680 & 3350
2680 & 4690
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 670. The lists we created can go on forever.

Two numbers have a GCF of Calculator
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Teacher Tip: If you are a teacher, you could ask these questions of your students: "I am thinking of two numbers and the GCF is 670, what are the numbers?" or "What are two numbers whose GCF is 670?"

What two numbers have a GCF of 671?
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