Best Answer

420

42,10

42,5,2

21,2,5,2

7,3,2,5,2

2 x 2 x 3 x 5 x 7 = 420

Q: What is the factor tree of 420 when the top numbers are 42 and 10?

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If the number on the top layer of the factor tree is 74, the numbers on the second layer are 2 and 37. There are no further layers to the tree, as both factors are prime.

The prime factorization of the number at the top

A factor tree is a way to notate the process of finding the prime factorization. Put the number you're trying to factor at the top and start breaking it down. When all the factors are prime, stop. 210 105,2 35,3,2 7,5,3,2 2 x 3 x 5 x 7 = 210

In order to do a factor you need to draw 3 lines vertical and 3 horizontal.Then you write the numbers on the lower left squares.Then on the far left side you put a number that goes into both numbers.You keep on going until the numbers are simplified the most.The top first numbers are the smallest fractions you can get. The to find the least common multiple you multiply all the left numbers and all the numbers on top.To find the greateset common factor you multiply all the numbers on the left side.If you need help email me at : reyes70@q.com

a factor is actually like a tree with branches.just divide 90 by prime whole numbers until you get all prime numbers.first divide 90 by 290/2 = 45 [2 is a prime whole number]45/5 = 9 [5 is a prime whole number]9/3 = 3 [3 is a prime whole number]since your last number is 3 you cant divide anymore to get a smaller prime whole number.so now use the numbers you have... 90,45,9,2,3,3, and 5 to make your factor tree.start with 90 at top. make two branches with 45 and 2 on the ends. make two more branches from 45 with 9 and 2 on the ends. make two more branches from the 9 with a 3 and 3 on the ends. all of the ends of your branches now have prime whole numbers and you are finish!9045,215,3,25,3,3,2

Related questions

If the number on the top layer of the factor tree is 74, the numbers on the second layer are 2 and 37. There are no further layers to the tree, as both factors are prime.

The prime factorization of the number at the top

A factor tree is a way to notate the process of finding the prime factorization of a given number by writing the number at the top and breaking it down into factors on subsequent lines or "branches." The tree is complete when the bottom branch consists only of prime numbers.

The factor tree of 540 is drawn by placing 540 at the top then drawing lines right below it for 10 and 54. The numbers 2 and 5 are branched from 10 and 2 and 27 are branched from 5. Then under 27, the numbers 3 and 9 are branched out. Lastly, 3 and 3 are branched from 9.

It is hard to draw an actual tree on here. So ill do my best to explain it. To make a factor tree you need to get the numbers on the end of the branches to be all prime numbers. Prime numbers are numbers that can not be divided by a whole number any more to get a whole number. 426/2 = 213 [2 is a prime number] 213/3 = 71 [71 is a prime number... 71 is one of the more difficult numbers to find out if it is prime or not but believe it is prime] Now take all ofthe numbers that you used... 426, 213, 71, 3, and 2 and use them in your factor tree. Put 426 at the top of the tree. Make two branches with 213 and 2 coming off of these branches. From the 213 make two more branches making 3 and 71 coming off from these branches. If you do it correctly you will see the 2, 3, and 71 are at the end of the branches. All these numbers are prime numbers. Now you have you completed factor tree!

If completed correctly, the bottom branch of a factor tree will be the prime factorization of the number at the top.

Just put 6 at the top of your tree and then have 2 and 3 coming off of it.

My guessJamie ArcherJoe McElderryStacey Solomon

Place the number you want to factor at the top of the page. Divide it by prime numbers until all the factors are prime. Example: 210 210 105,2 35,3,2 7,5,3,2 2 x 3 x 5 x 7 = 210

That's pretty easy, u start out with the number you're factorizing up at the top , then below it any two numbers that equal it when multiplied together. then do the same for each number so on until you cant divide them into two numbers again. here's an example: 21 3 7 you can't divide 3 or 7 into any other integers therefore that is your factor tree,

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.

Whatever composite number you're trying to find the prime factorization of.