Category: Grade 10

The GCF

This week in math I learned how to find the Greatest common factor of two different numbers. I learned two different ways that i could find the GCF:

1. Use a factor tree.

To find the GCF using the factor tree you take the first number and you write how you multiply to get the number. If the numbers you chose are prime numbers then you circle that number. If the number is not a prime number you repeat the process until you get all prime numbers. With each set of prime numbers you would cross out all matching numbers and place them somewhere else on your page. multiply these prime numbers together and you have your GCF

Ex:

2. division table

To find the GCF using a division table you must take the number and divide it by a prime number going from least to greatest. Repeat this process until you are left with a 1. With each set of prime numbers you would cross out all matching numbers and place them somewhere else on your page. multiply these prime numbers together and you have your GCF.

How i used math this summer

To be honest this summer I did not use math that much but there were some times when I had to use math to do some calculations. This year I am going on the school trip to orlando and I must pay for a portion of the trip. To make money I decided to referee soccer every weekend. every game I would make 21$ and so I multiplied 21 by the amount of games I would need to referee until I came to the amount I needed to pay. The conclusion that I came to is that I would need to referee 40 games until I could make the money to pay for my portion of the trip. 

Image of calculator: https://www.bing.com/aclick?ld=e8uoshXyyK1jtxM-KvUX48SjVUCUxhZcvaNgibD3NfdtymNjptrCxXfPJS6YsTlIx1o0gp4R9oYMjSFgX0M2LWAdTpcJi8WCZRHxSo7Odtd1Fx6C1CydgcyWWjw_MNISgpw7YAqSCcSNnp9Rpl-5RszYfXSMjN2nJ2w8kgkI_rcS2wHi5C&u=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&rlid=7947eaf631351437daee8c283fbdac18

image of orlando: https://www.bing.com/images/search?view=detailV2&ccid=aEaDvhfE&id=E77D3FDEF159B1464ADEE67D6733F89EC57176B5&thid=OIP.aEaDvhfE7NyJ7_YRdXtNUwAAAA&mediaurl=https%3a%2f%2fa.cdn-hotels.com%2fgdcs%2fproduction103%2fd1819%2f36288169-f07d-47be-90c1-09f275ab3f9d.jpg&cdnurl=https%3a%2f%2fth.bing.com%2fth%2fid%2fR.684683be17c4ecdc89eff611757b4d53%3frik%3dtXZxxZ74M2d95g%26pid%3dImgRaw%26r%3d0&exph=315&expw=474&q=orlando&simid=608046909010571128&FORM=IRPRST&ck=1B77B309B449611AB927136C2BA5E316&selectedIndex=12&itb=0