Mencal is an app help you expand your ability to mentally solve math problems. All of us can do simple addition and subtraction of one or two digit numbers without a calculator.Now mencal is here to kick that ability into overdrive.

Mencal provides you with lessons and simple tricks to allow you to: work with three digit numbers; fractions of different styles regardless if you are adding them or subtracting them; and finding sums with multiplication and division. Then it will test you on your grasp and knowledge of the methods you've learned.

• Example:

- Same ten's digit,1's sum to 10

38×32=1216

①:Multiply tens place digit by itself plus 1

(3+1)×3=12

②:Add two zeros to the end of step①

12<—00=1200

③:Multiply the two one's digits together

8×2=16

④:Add the results of step ②and③

1200+16=1216

• Quickly Square:

- Square numbers made up of 1's

- Square numbers made up of 3's

- Square numbers in the 90's

- Square numbers ten`s digit is 0

- Square a number ending in 25

- Square numbers made up of 6's

- Square numbers made up of 9's

- Square a number ending in 1

- Square a number ending in 5

- Square a number ending in 9

- Square numbers in the 10's

- Square numbers in the 40's

- Square numbers in the 50's

- Square numbers in the 500's

- Square numbers in the 600's

- Square numbers in the 700's

- Square numbers in the 800's

- Square numbers in the 900's

•Standard:

- Same ten's digit, 1's sum is 10

- Same ten's digit, 1's sum isn`t 10

- Same 1's digit, ten's digits sum is 10

- Same 1's digit, ten's digits sum isn`t 10

- two-digit number ab×cc (a+b=10)

- ab×ccc.....c (a+b=10)

- Multiply by 11

- 2-digit number if 1's digit is 1

- 2-digit number if tens place digit is 1

- 2-digit number ×2-digit number(universal)

- Multiply differing by 5

- Multiply differing by 6

- Multiply differing by 7

- Multiply differing by 8

- Multiply differing by 9

- Multiply differing by 10

- Multiply two numbers that in the 90‘s

- Two-digit number like ab+ba

- Three-digit number like abc+cba

- Two fractions like 1/a+1/b

- Two fractions like (a-1)/a + (b-1)/b

- Sum of first n odd numbers

- Sum of first n even numbers

- Two-digit number like ab-ba

- Three-digit number like abc-cba

- m-n if m+n=100,1000,10000...

- Two fractions like 1/a-1/b

- Two fractions like c/a-c/b

- Two fractions like (a-1)/a-(b-1)/b

- Divide any number by 5

- Divide any number by 25

- Divide any number by 125

- Divide any 3-figure number by 9

"This app rocks!! Great for Math Team practice!" -by Bubba Smith

"Great app, make me feel less stupid" -by Howie_Serious

"Its a useful app for anyone who wants to know the numbers deeper" -by sjzbim

"It's a good app for both kids and sometimes even adults" -by Willwang

Love mencal or have a question? We would love to hear your feedback! Contact us anytime at instantcj@gmail.com

➜ What's new in version 3.70

This app has been updated by Apple to use the latest Apple signing certificate.

● Ready for iPhone X

● Additional bug fixes and stability improvements

● Remove math game In-App purchase