NOTE: This is 1 of 4 versions of the same product.
This version is text or voice with NICE or MEAN comments. Example: You miss a problem - it will put out a message like "Don't worry about it. I am sure you will get the next one." or if you want mean comments maybe a comment like "Haha, my grandma got it right and you couldn't. Hahahaha". It can also speak it. You think you are good at math, then try solving the problems in interruptive mode where the program nags you with comments like "Come on, come on what is taking so long" as you work on it!
If you would like one that does not talks to you or does not have any mean comments then try out one of the other versions.
This product will do two things.
1) Teach you how to take percentages using 6 types of problems.
2) Test you over the material.
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Here is the link to the best free software for teaching and testing students over the conversion of decimals to http://www.adreamforabetterworld.com/Software/Percentages-AllSounds.exe