https://github.com/mobluse/aritm

Aritm trains you in simple mental calculation. This program teaches its users the addition, subtraction, multiplication, and division tables. It employs a very effective method, which makes the process short with these useful tables.
https://github.com/mobluse/aritm

Last synced: 3 months ago
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Aritm trains you in simple mental calculation. This program teaches its users the addition, subtraction, multiplication, and division tables. It employs a very effective method, which makes the process short with these useful tables.

• Host: GitHub
• URL: https://github.com/mobluse/aritm
• Owner: mobluse
• License: gpl-3.0
• Created: 2015-04-04T00:21:31.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2024-07-23T17:38:23.000Z (over 1 year ago)
• Last Synced: 2025-03-13T14:13:38.918Z (10 months ago)
• Language: Java
• Homepage: http://mobluse.github.io/aritm/
• Size: 134 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          


  

  

  

  



Aritm







Aritm 1.0.5

News: Aritm now works in browsers with

Java from OpenJDK (common on Linux). A version with sound-effects works

in browsers with Java from Oracle or Microsoft: Aritm w/ 

sun.audio. Aritm is also

available as a free stand-alone Java application (AritmApp), and in that the

sound-effects works with all Java-systems. Now you can get

Aritm

for TI-8x calculators and Aritm for mobile (cellular) phones.

Aritm trains you in simple mental calculation.

This program teaches its users the addition, subtraction,

multiplication, and division tables. It employs a very effective

method, which makes the process short with these useful tables. If

you know these tables it is much easier to follow the mathematics

education. Further more, you can use them in everyday situations,

especially if you also know rough estimate calculation. These tables,

neither more nor less, is everything you need to know by heart,

because there are manual methods for calculating with more

complicated numbers. It is always good to do an Aritm workout before

you are going to a math test. Also, you can use Aritm to train

calculation in foreign languages. You can mix the problems anyway you

like, e.g. you can choose addition and multiplication at the

same time.



  
Addition

  
 

    


      
1

      
The sum of two single digit terms.

      
2

      
The sum of one double digit and one single digit term.

    

  

  
Subtraction

  
 

    


      
1

      
The difference of two small terms.

      
2

      
The difference of one larger term and one smaller.

      
From

      
The problem is written M from N, instead of N-M.

    

  

  
Multiplication

  
The product of two single digit factors.

  
Division

  
The quotient between two numbers. The dividend (numerator) is

usually larger than the divisor (denominator).

  
Arabic

  
The numbers is written using arabic digits, which properly should

be called european, since they do not look very similar to current day

arabic digits, but the system is the same even if the digit symbols are

different. That is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. You can change

presentation mode while you are working through the problems, but that

might be considered sheating.

  
Words

  
The problems are written in words. This literary mode is good for

getting the connection between spoken and written numbers.

  
Roman

  
The numbers are written in minimal roman notation. Learn more

about roman numbers in the documentation to the TI-82 program roman.txt.

  
Start/Stop

  
When you have checked which problems you want, you click Start,

and write the answer using digits and press Enter. If your answer is

incorrect, you will get that problem again, later. If you want to end

prematurely, click Stop. You should make about 10 problems per

minute or more. If you find it too difficult, you may use the Pocket Calculator.

In the end you will know this anyway.

  
License Info

  
Aritm is open source and free/libre software according to GPL v3+, see 

Aritm.java. Donations to my PayPal account 

mikaelb@df.lth.se are welcome.

  
Comments Welcome

  
License questions, bug reports, and suggestions for improvements

on the program Aritm and this documentation is gratefully received by Mikael Bonnier.

  
Acknowledgements

  
Here you will find a list of people I am grateful to.

  
DISCLAIMER

  
THIS PROGRAM COMES WITH ABSOLUTELY NO WARRANTY.



The program Aritm and this documentation is Copyright ©

1997–2012 by Mikael Bonnier, Lund, Sweden.




1997-Mar-15 #MB3-2



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