A simple digital operation, you need to be limited in a limited time to count the number of questions, once the time to go to lose it!
Exercise in the addition, subtraction, multiplication, division exercises can also let you practice the corresponding operation.
The basic 10 or less of the addition and subtraction to start to understand the addition and subtraction of the different meaning for the future to lay the foundation for learning
This version of Digital algorithm Android App comes with one universal variant which will work on all the Android devices.
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