7 Jul
Math xyz

Posted by carel van der westhuizen in Educational | July 7, 2016 | 0 Comments

Apk file size: 791.0 KB

If I must think of keywords for this APP it will be math, mathemagics, educational , magic .
This APP will teaches you the following.

You will ask someone to think of a 2 digit number, but not to tell you. Then tell them to power it to say 5.
This is the number 5 times itself. For instance 11x11x11x11x11 which is 161051 We write it
as 11^5 = 161051. The magic will teach you for instance that if they give you the number 33554432 that the fifth root is 32. So 32^5 = 33554432 This you will do in your head. So this app will teach you and you can also use this app to practice. You can make money. Bets.

Our first exercise will be be 2 numbers to the power of 3
So the list you will learn is
x x^3
1 1
2 8
3 27
4 64
5 125
6 216
7 343
8 512
9 729

I assume you know the list of ^3
by now.Notice the last digit of each
power. It goes 1,8,7,4,5,6,3,2,9
Notice it is the same for ^7.
Lets take an example
87^3=658503
Look at the last digit. Its 3. In the
list 343 has its last digit as 3.
7^3=343. So the last digit of
our 2 digit number is 7. Now
we throw away the last 3 digits and
are left with 658. In the list 658 lies
between 512 and 729. We always
choose the smaller number. So
512 it must be. 8^3=512 So
our first digit of our cube root
is 8. Therefore the cube root of
658503 is 87.

This App will teaches you not only this but 2 number ^ 5 and 7 and also 3 numbers to the power of 3 and 7.

carel van der westhuizen part of our Educational and have average installs from 10 to 50. Last Update July 7, 2016. Google play rating is 84.2336. Current verison is 1.0. Actual size 791.0 KB.