subject
Mathematics, 24.03.2021 04:50 ABrabbit732

Random tip for math nerds like me :) Only read if you are math nerd A few years ago I learned a way to square really large numbers ( ex.99 x 99) in a matter of seconds and I was able to impress all my friends with it EVEN THOUGH I'm only in 7th grade. Heres how to do it: say you wanted to find out 99 x 99. You would first subtract one of the numbers from 100. 100 - 99 = 1. In this case, the answer is 1. So, we do 99-1=98. Then, we multiply the 2 numbers we just got. 98 x 100 = 9800. Then, since we added and subtracted 1 earlier, we multiply that by itself. 1 x 1 = 1. Then we add that to our previous answer (9800.) 9800 + 1 = 9801! Therefore, 99 x 99 = 9801. Try this with a calculator, it will be 9801! We could also do this with say for example 98 x 98. 100 - 98 = 2 98 - 2 = 96 96 x 100 = 9600 2 x 2 = 4 9600 + 4 = 9604 so 98 x 98 = 9604! This seems like a lot but once you learn it it's super easy to do it in your head and make you sound like einstien! Good luck with this! Try this out by yourself with the numbers 97,96,95 etc and see if you can do it without the calculator!

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 21:00
Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.
Answers: 3
question
Mathematics, 21.06.2019 22:50
Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585
Answers: 1
question
Mathematics, 21.06.2019 23:00
Type the correct answer in each box. use numerals instead of words. the average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below. the average number of subscribers to the online magazine in 2010 was the percent increase in the average number of subscribers in 2011 to the average number of subscribers in 2012 was %. the maximum average number of subscribers to the online magazine in the years shown was
Answers: 2
question
Mathematics, 22.06.2019 02:00
My final challenge question of the day! i have no tests, nothing to do this for, it is simply giving away free points for a you tube video! so 50 free points for answering the most simple question ever! here is the key to getting brainiest for this question. answer in under 50 seconds. you think you can do it. i think you can. here is the question: 1x2= i know! easiest question ever! and yes! if you answer this question, you will be on you so come on and get the free 50 while you can!
Answers: 2
You know the right answer?
Random tip for math nerds like me :) Only read if you are math nerd A few years ago I learned a way...
Questions
question
Chemistry, 22.04.2021 16:30
question
Mathematics, 22.04.2021 16:30
question
History, 22.04.2021 16:30
Questions on the website: 13722363