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2 |10,18

, |_________

5,9

The GCF is 2.

Q: How do you use a division ladder to find the greatest common factor of 10 and 18?

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155,3105,2The GCF is 5.The GCF of 10 and 15 is 5.

Division Ladders are useful for finding Greatest Common Factors, also known as Greatest Common Divisors. If your math problem is Find the GCF of 32, 24, and 40 using a Division Ladder, you would find the answer thusly: 2 |32, 24, 40 , |_________ 2 |16, 12, 20 , |________ 2 | 8, 6, 10 , |_________ , 4, 3, 5 You would be dividing by 2 in this case, then multiply your divisors, 2x2x2 = 8. Your Greatest Common Factor for 32, 24, and 40 is 8. I used the commas for placeholders, as without them, the vertical lines don't line up.

It would only have one rung, since the only common prime factor of 22 and 60 is 2. 2)22,60

Don't bother. Since 25 is a factor of 75, it is automatically the GCF.

It would only have one rung, since the only common prime factor of 33, 55 and 132 is 11. 11)33,55,132

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No.

The GCF is 3.

The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself. So you do not need to use the division ladder or any other method!

Don't bother. Since 25 is a factor of 75, it is automatically the GCF.

15 5,3 10 5,2 The GCF is 5.

22 11,2 There are no elevens in 60, so the GCF has to be 2.

155,3105,2The GCF is 5.The GCF of 10 and 15 is 5.

No matter what you use, you still need at least two numbers to find a GCF.

Division Ladders are useful for finding Greatest Common Factors, also known as Greatest Common Divisors. If your math problem is to find the GCF of 32, 24 and 40 using a Division Ladder, you would find the answer thusly: 2 |32, 24, 40 , |_________ 2 |16, 12, 20 , |________ 2 | 8, 6, 10 , |________ , 4, 3, 5 You would be dividing by 2 in this case, then multiply your divisors, 2 x 2 x 2 = 8. Your Greatest Common Factor for 32, 24 and 40 is 8. I used the commas for placeholders, as without them, the vertical lines don't line up.

It doesn't matter if the expression is negative, the greatest common factor will still be positive, since you only count the left side of the ladder. When the left side is mutiplied together, it will be positive, because the negative side is on the right side. Therefore, just keep dividing the negative, but it will not affect the common factor

Division Ladders are useful for finding Greatest Common Factors, also known as Greatest Common Divisors. If your math problem is to find the GCF of 32, 24 and 40 using a Division Ladder, you would find the answer thusly: 2 |32, 24, 40 , |_________ 2 |16, 12, 20 , |________ 2 | 8, 6, 10 , |________ , 4, 3, 5 You would be dividing by 2 in this case, then multiply your divisors, 2 x 2 x 2 = 8. Your Greatest Common Factor for 32, 24 and 40 is 8. I used the commas for placeholders, as without them, the vertical lines don't line up.

Division Ladders are useful for finding Greatest Common Factors, also known as Greatest Common Divisors. If your math problem is Find the GCF of 32, 24, and 40 using a Division Ladder, you would find the answer thusly: 2 |32, 24, 40 , |_________ 2 |16, 12, 20 , |________ 2 | 8, 6, 10 , |_________ , 4, 3, 5 You would be dividing by 2 in this case, then multiply your divisors, 2x2x2 = 8. Your Greatest Common Factor for 32, 24, and 40 is 8. I used the commas for placeholders, as without them, the vertical lines don't line up.