As your math tutor, I’m here to help you break down factor pairs of 2205 step by step!
Factor pairs of 2205 are any two numbers that, when multiplied together, equal 2205. The question to ask is “what two numbers multiplied together equal 2205?” Every factor can be paired with another factor, and multiplying the two will result in 2205.
To find the factor pairs of 2205, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 2205. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 3.
Step 2:
Divide 2205 by the smallest prime factor, in this case, 3:
2205 ÷ 3 = 735
3 and 735 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 735 as the new focus. Find the smallest prime factor that isn’t 1, and divide 735 by that number. In this case, 3 is the new smallest prime factor:
735 ÷ 3 = 245
Remember that this new factor pair is only for the factors of 735, not 2205. So, to finish the factor pair for 2205, you’d multiply 3 and 3 before pairing with 245:
3 x 3 = 9
Step 4:
Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs.
Here are all the factor pairs for 2205:
(1, 2205), (3, 735), (5, 441), (7, 315), (9, 245), (15, 147), (21, 105), (35, 63), (45, 49)
So, to list all the factors of 2205: 1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205
The negative factors of 2205 would be: -1, -3, -5, -7, -9, -15, -21, -35, -45, -49, -63, -105, -147, -245, -315, -441, -735, -2205
Now you’ve got it! A math tutor would always encourage you to practice with different numbers to reinforce your understanding of factor pairs. Try another one!