What two numbers have a GCF of 490?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 490.

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 490. Below is the beginning list of multiples of 490 (1 through 7) in numerical order.

1. 490
2. 980
3. 1470
4. 1960
5. 2450
6. 2940
7. 3430
etc...

Two numbers that have a GCF of 490 can be 490 and any other number on the list above. Thus, two numbers that have a GCF of 490 are:

490 & 980
490 & 1470
490 & 1960
etc...

That is not all! Any combination of any multiple of 490 and "odd" multiples of 490 will also have GCF of 490. 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 490.

980 & 1470
980 & 2450
1960 & 2450
1960 & 3430
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 490. 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 490, what are the numbers?" or "What are two numbers whose GCF is 490?"

What two numbers have a GCF of 491?
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