As your math tutor, I’m here to help you break down factor pairs of 678 step by step!
Factor pairs of 678 are any two numbers that, when multiplied together, equal 678. The question to ask is “what two numbers multiplied together equal 678?” Every factor can be paired with another factor, and multiplying the two will result in 678.
To find the factor pairs of 678, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 678. 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 2.
Step 2:
Divide 678 by the smallest prime factor, in this case, 2:
678 ÷ 2 = 339
2 and 339 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 339 as the new focus. Find the smallest prime factor that isn’t 1, and divide 339 by that number. In this case, 3 is the new smallest prime factor:
339 ÷ 3 = 113
Remember that this new factor pair is only for the factors of 339, not 678. So, to finish the factor pair for 678, you’d multiply 2 and 3 before pairing with 113:
2 x 3 = 6
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 678:
(1, 678), (2, 339), (3, 226), (6, 113)
So, to list all the factors of 678: 1, 2, 3, 6, 113, 226, 339, 678
The negative factors of 678 would be: -1, -2, -3, -6, -113, -226, -339, -678
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!