As your math tutor, I’m here to help you break down factor pairs of 8100 step by step!
Factor pairs of 8100 are any two numbers that, when multiplied together, equal 8100. The question to ask is “what two numbers multiplied together equal 8100?” Every factor can be paired with another factor, and multiplying the two will result in 8100.
To find the factor pairs of 8100, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 8100. 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 8100 by the smallest prime factor, in this case, 2:
8100 ÷ 2 = 4050
2 and 4050 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 4050 as the new focus. Find the smallest prime factor that isn’t 1, and divide 4050 by that number. In this case, 2 is the new smallest prime factor:
4050 ÷ 2 = 2025
Remember that this new factor pair is only for the factors of 4050, not 8100. So, to finish the factor pair for 8100, you’d multiply 2 and 2 before pairing with 2025:
2 x 2 = 4
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 8100:
(1, 8100), (2, 4050), (3, 2700), (4, 2025), (5, 1620), (6, 1350), (9, 900), (10, 810), (12, 675), (15, 540), (18, 450), (20, 405), (25, 324), (27, 300), (30, 270), (36, 225), (45, 180), (50, 162), (54, 150), (60, 135), (75, 108), (81, 100), (90, 90)
So, to list all the factors of 8100: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 135, 150, 162, 180, 225, 270, 300, 324, 405, 450, 540, 675, 810, 900, 1350, 1620, 2025, 2700, 4050, 8100
The negative factors of 8100 would be: -1, -2, -3, -4, -5, -6, -9, -10, -12, -15, -18, -20, -25, -27, -30, -36, -45, -50, -54, -60, -75, -81, -90, -100, -108, -135, -150, -162, -180, -225, -270, -300, -324, -405, -450, -540, -675, -810, -900, -1350, -1620, -2025, -2700, -4050, -8100
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!