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First, find two numbers that when multiplied together equal 189.

I can tell by looking at the number that it is divisible by 9. Any number whose digits add up to a number divisible by 9 is also divisible by 9. 1 + 8 + 9 = 18, which is divisible by 9. 189 ÷ 9 is 21.

So, the top of our factor tree is:

189

9 x 21

Now, determine two pairs of numbers that when multiplied together, one pair will equal 9 and the other pair will equal 21. 9 = 3 x 3 and 21 = 7 x 3.

So, now our factor tree is:

189

9 x 21

(3x3) x (7x3)

You would continue doing this until you no more numbers can be factored. Since 3 and 7 are prime numbers, the factor tree is finished.

The factor tree shows that the prime factorization of 189 is 3 x 3 x 3 x 7 or 33 x 7.

Q: How do you make a factor tree for 189?

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You cannot really make a factor tree for 7 because it is already a prime number.

15,3 3,5,3

The GCF of 189, 315, and 441 is: 63

27 3,9 3,3,3

9x9=81. Proving that one of the factor trees for 81 is 9xp.

Related questions

it is the factors of 189

189 63,3 21,3,3 7,3,3,3

189 63,3 21,3,3 7,3,3,3

1899 213 3 3 7

189 63, 3 21, 3, 3 7, 3, 3, 3

The 8 factors of 189 are 1, 3, 7, 9, 21, 27, 63, and 189. 3 and 7 are prime.

7 is a prime factor of 189, because 7 X 27 = 189.

The greatest common factor of 81 and 189 is 27.

The Greatest Common Factor of 189 and 449 is 1.

Since 27 is a factor of 189, it is automatically the GCF.

no

The factor tree is as follows: 114 57,2 19,3,2