As your math tutor, I’m here to help you break down factor pairs of 999 step by step!
Factor pairs of 999 are any two numbers that, when multiplied together, equal 999. The question to ask is “what two numbers multiplied together equal 999?” Every factor can be paired with another factor, and multiplying the two will result in 999.
To find the factor pairs of 999, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 999. 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 999 by the smallest prime factor, in this case, 3:
999 ÷ 3 = 333
3 and 333 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 333 as the new focus. Find the smallest prime factor that isn’t 1, and divide 333 by that number. In this case, 3 is the new smallest prime factor:
333 ÷ 3 = 111
Remember that this new factor pair is only for the factors of 333, not 999. So, to finish the factor pair for 999, you’d multiply 3 and 3 before pairing with 111:
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 999:
(1, 999), (3, 333), (9, 111), (27, 37)
So, to list all the factors of 999: 1, 3, 9, 27, 37, 111, 333, 999
The negative factors of 999 would be: -1, -3, -9, -27, -37, -111, -333, -999
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!