What two numbers have a GCF of 945?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 945.

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 945. Below is the beginning list of multiples of 945 (1 through 7) in numerical order.

1. 945
2. 1890
3. 2835
4. 3780
5. 4725
6. 5670
7. 6615
etc...

Two numbers that have a GCF of 945 can be 945 and any other number on the list above. Thus, two numbers that have a GCF of 945 are:

945 & 1890
945 & 2835
945 & 3780
etc...

That is not all! Any combination of any multiple of 945 and "odd" multiples of 945 will also have GCF of 945. 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 945.

1890 & 2835
1890 & 4725
3780 & 4725
3780 & 6615
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 945. 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 945, what are the numbers?" or "What are two numbers whose GCF is 945?"

What two numbers have a GCF of 946?
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