As your math tutor, I’m here to help you break down factor pairs of 630 step by step!
Factor pairs of 630 are any two numbers that, when multiplied together, equal 630. The question to ask is “what two numbers multiplied together equal 630?” Every factor can be paired with another factor, and multiplying the two will result in 630.
To find the factor pairs of 630, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 630. 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 630 by the smallest prime factor, in this case, 2:
630 ÷ 2 = 315
2 and 315 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 315 as the new focus. Find the smallest prime factor that isn’t 1, and divide 315 by that number. In this case, 3 is the new smallest prime factor:
315 ÷ 3 = 105
Remember that this new factor pair is only for the factors of 315, not 630. So, to finish the factor pair for 630, you’d multiply 2 and 3 before pairing with 105:
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 630:
(1, 630), (2, 315), (3, 210), (5, 126), (6, 105), (7, 90), (9, 70), (10, 63), (14, 45), (15, 42), (18, 35), (21, 30)
So, to list all the factors of 630: 1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630
The negative factors of 630 would be: -1, -2, -3, -5, -6, -7, -9, -10, -14, -15, -18, -21, -30, -35, -42, -45, -63, -70, -90, -105, -126, -210, -315, -630
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!