I want to make sure I'm doing the GCF correctly with 3 numbers. The problem is: Ari is making patriotic pins. He has 105 red ribbons, 147 white ribbons, and 189 blue ribbons. What is the greatest number of identical pins he can make if he uses all his ribbons? I think the answer is 21. Is that correct? Thanks..

  1. 👍 0
  2. 👎 0
  3. 👁 148
  1. 21 is correct.
    When in doubt, do one of the following:
    1. Find GCF for two numbers at a time, the first time using two original numbers. The second time use the first GCF and the third number.
    2. Divide each original number by the GCF found. If the numbers don't divide, there is a mistake. If there is a GCF between the three GCFs, then some factors were missing from the original GCF.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    GCF of 2 natural numbers is 3 and their LCM is 180 if one of the numbers is 45 then find second number

    asked by Anonymous on December 2, 2019
  2. math

    i can't figure out this problem. the GCF of two numbers is 479. one number is even and the other number is odd. neither number is divisible by the other. what is the smallest that these two numbers could be?

    asked by jennifer on October 17, 2008
  3. Math

    explain why it is important to correctly line up numbers according to their place value when doing a division problem

    asked by Eunji on November 13, 2017
  4. MAT126: Survey of Mathematical Methods

    All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: List the ages of two people in your life, one older than you and one younger than you. It would be best if

    asked by sheila on December 20, 2013
  1. math

    List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’

    asked by melvin on January 25, 2011
  2. MATH

    Given the GCF or LCM, what else do you know about each pair of numbers? a) Two numbers have GCF of 2. b) Two numbers have an LCM of 2. Please and thankyou!

    asked by Vanessa on September 13, 2010
  3. maths

    the gcf of two numbers is 3 and lcm is 180.if one of the numbers is 45,what is the other number?

    asked by mesenbet on October 6, 2018
  4. Math

    Someone plz help me. I don't want to fail. And im kinda bad at this. 1.Find the GCF of 8 and 15. A.1 B.2 C.3 D.5 2.Find the GCF of 39 and 52. A.1 B.3 C.6 D.13 3.In a sixth-grade math class, four students were finding the GCF of

    asked by whatever on October 16, 2018
  1. 6th grade math

    Can you check the following problems? Tell if the problem can be solved by using GCF or LCM and then solve. 1. Joanne is campaigning for class president and plans to distribute 20 flyers and 16 buttons. She wants each classroom to

    asked by Alex on September 4, 2013
  2. Math 6th Grade

    The product of the GCF and LCM of two numbers is 12. Give one possible pair of values for the two numbers

    asked by Aa on August 2, 2016
  3. math

    if the product of two numbers is 180 and the LCM of the two numbers is 60 then how do I determine what the GCF is?

    asked by alice on January 8, 2011
  4. Math

    The GCF of two numbers is 5. The LCM is 60. One of the numbers is 20. What is the other number?

    asked by Devan on September 9, 2016

You can view more similar questions or ask a new question.