What two numbers have a GCF of 870?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 870.

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 870. Below is the beginning list of multiples of 870 (1 through 7) in numerical order.

1. 870
2. 1740
3. 2610
4. 3480
5. 4350
6. 5220
7. 6090
etc...

Two numbers that have a GCF of 870 can be 870 and any other number on the list above. Thus, two numbers that have a GCF of 870 are:

870 & 1740
870 & 2610
870 & 3480
etc...

That is not all! Any combination of any multiple of 870 and "odd" multiples of 870 will also have GCF of 870. 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 870.

1740 & 2610
1740 & 4350
3480 & 4350
3480 & 6090
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 870. 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 870, what are the numbers?" or "What are two numbers whose GCF is 870?"

What two numbers have a GCF of 871?
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