As your math tutor, I’m here to help you break down factor pairs of 1120 step by step!
Factor pairs of 1120 are any two numbers that, when multiplied together, equal 1120. The question to ask is “what two numbers multiplied together equal 1120?” Every factor can be paired with another factor, and multiplying the two will result in 1120.
To find the factor pairs of 1120, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1120. 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 1120 by the smallest prime factor, in this case, 2:
1120 ÷ 2 = 560
2 and 560 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 560 as the new focus. Find the smallest prime factor that isn’t 1, and divide 560 by that number. In this case, 2 is the new smallest prime factor:
560 ÷ 2 = 280
Remember that this new factor pair is only for the factors of 560, not 1120. So, to finish the factor pair for 1120, you’d multiply 2 and 2 before pairing with 280:
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 1120:
(1, 1120), (2, 560), (4, 280), (5, 224), (7, 160), (8, 140), (10, 112), (14, 80), (16, 70), (20, 56), (28, 40), (32, 35)
So, to list all the factors of 1120: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120
The negative factors of 1120 would be: -1, -2, -4, -5, -7, -8, -10, -14, -16, -20, -28, -32, -35, -40, -56, -70, -80, -112, -140, -160, -224, -280, -560, -1120
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!