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In math class, your teacher presents you with a word problem using the triangle below. You realize that you need to divide the angle in half. To divide the 45 degree angle, you want to use the factors of 45 since you are so familiar with factoring.
Can you use factors of 45 to know which degree to split this angle in half?
Remember, you won’t have a remainder with factors. So, factors are whole numbers.
Factors of 45 are 1 and 45
The images below show the factors of 45. To find this, you had to find which numbers from 1 to 45 can divide into 45 without having a remainder.
Many boy bands have 5 members in them. Therefore, if we multiplied the 5 members by 9 groups, that would equal 45. Those are two factors for 45. Wow! That is a lot of boy bands.
The other factors for 45 are 1 and itself, 45. So, all of the factors are 1, 5, 9, and 45.
Remember back to the angle from the word problem in your math class. Let’s see if you can use the factors of 45 to see where to divide this angle in half. Since you will be dividing it in half, you will need to equally divide the number, 45, by 2.
Since it is an odd number, you will not be able to use a factor of 45 to help you with this problem. Therefore, the answer is no.
There are many things that come in groups of 45. Because 45 is a round number since it ends in 5, there are many things that have 45 objects in them. If you drive a car, you may notice that many roads and streets have signs posted for speed limits. Forty-five mile per hour signs are common because they want people to drive below that speed limit. Also, in math, many times you will see in geometry 45-degree angles in triangle. That is a common angle amount. Finally, 45 days is a common amount of time to use for something. It is a month and a half. If you ever have bought a house, at first it was expected for buyers to close on a house within 30 days. However, now it takes longer and it could be about 45 days.
You would need to know the factors for 45 because you may have to further answer questions and work problems after you have figured out the factors of 45. Finding the factors may be only the first step in solving a problem. However, it is best to know those numbers before trying to work the rest of the problem. Factors has to do also with learning your multiplication facts.
The factors for 45 are 1, 5, 9 and 45. This is a number that does not have a lot of factors even though it is a larger number. You may already tell that a factor for 45 is not 2 because 45 is not an even number.
Most likely, you will struggle if you don’t know how to divide or you struggle with that concept. This is because when you are trying to find the factors for a number, you will be doing a lot of dividing. If you divide incorrectly, then you may list a factor for a number that is really not a factor. One way to avoid this mistake would be to either use a calculator if that is a possibility or practice dividing. Last, you could memorize the factors for certain numbers that are used a lot in your math problems.
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