As your math tutor, I’m here to help you break down factor pairs of 1100 step by step!
Factor pairs of 1100 are any two numbers that, when multiplied together, equal 1100. The question to ask is “what two numbers multiplied together equal 1100?” Every factor can be paired with another factor, and multiplying the two will result in 1100.
To find the factor pairs of 1100, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1100. 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 1100 by the smallest prime factor, in this case, 2:
1100 ÷ 2 = 550
2 and 550 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 550 as the new focus. Find the smallest prime factor that isn’t 1, and divide 550 by that number. In this case, 2 is the new smallest prime factor:
550 ÷ 2 = 275
Remember that this new factor pair is only for the factors of 550, not 1100. So, to finish the factor pair for 1100, you’d multiply 2 and 2 before pairing with 275:
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 1100:
(1, 1100), (2, 550), (4, 275), (5, 220), (10, 110), (11, 100), (20, 55), (22, 50), (25, 44)
So, to list all the factors of 1100: 1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100
The negative factors of 1100 would be: -1, -2, -4, -5, -10, -11, -20, -22, -25, -44, -50, -55, -100, -110, -220, -275, -550, -1100
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!