app store contest

This was an assignment by Mr. Meyer

the contest was to see who would download the 25th billion app on the store. WE were supposed to estimate when it would be downloaded We did some math to how many apps were downloaded in a day. We divided that number by how many hours were in the day it came roughly to 480. We then did the math to get around 10 days and 12 hours I do not remember exactly what we did because it was a day ago but the date and time we ended on is March 5, 6:24 am

what I learned the first nine weeks

In the first nine weeks I learned How to subtract and add negative integers, It was kind review for me so i did very well on the test. I got a 90% on the test.

I could also multiply them too. If one number is negative then the answer is negative, if both of them are negative it is positive. I also did very good on that with a site we go on Khan Academy

We also learned how to preform distributive property, I don’t remember it that much but it was pretty difficult I had a little trouble with it and i still do today

We learned combining like terms too also with distribution that was very easy an example in 12y + 9y = 21y you just add the like terms pretty self explanatory

We did exponents too I understood it very well It was also review for me again an example is 5^2 which would be 5 x 5 which is 25 I did great on khan academy with it

The last thing we did was simplify expressions using exponents, I don’t clearly remember this subject but I know I did well on Khan academy and the tests we have taken

My final grade is what I think I should have. I have a 95% which is an A. That is what I think I should have gotten Because I did all My work and understood most of it but not all of it. So I think that I should defiantly have an A

Exponents

Exponents can be very difficult. This is an example, 5^2 power the times you multiply is the exponent, which is 2 so you would do 5*5 to get 25< easy right? well it gets harder lets say that its a negative number for the exponent 5^-2 all you would do is make it into a fraction( 1/ )then you would do it like normal exponents and get 25 you then put it in like this( 1/25 ) that is probably the hardest. There is two more things if the number is one 1^49 the it would still be one because it would be multiplying 1 49 times. also if the exponent is 0,  5^0 the answer would be 1 every time its a 0 there the answer is 1 always. That’s it I hope it helps you out!

Estimating Square Roots

My square root is 80 the two other square roots next to it are 81 and 72 the numbers for those are 9 for 81 and 8 for 72, obviously 80 is much closer  to 81 than 72 so you can eliminate anything 8.5 and below for the square root. It would either be 6, 7, 8, or 9 it is in the higher end of those numbers so you could assume that it is in the 8 or 9’s doing some multiplication i found out that it is closer to a 9 it can’t be higher than .5 again. So cutting the numbers in half i finally came up with an answer 8.94 is very close to the correct square root. I hope this helped you out if you have anything to ask, comment!

Hello

We had our first math test not long ago. It included adding, subtracting, dividing and multiplying negative and positive numbers. Its pretty simple actually. If you are multiplying or dividing and both of them are negative the outcome is positive. If there is only one negative number is in there it will always be a negative number. The rules are different in adding and subtracting it mostly depends on which number is bigger than the other, But there is a really helpful rule called leave change change if it subtracting then you leave the first number change the subtraction to adding and change the last number to its opposite. It sounds hard but its really not. It will really help you out!