Now you can be the teacher, with this blackboard you can practice adding and subtracting from your device !!
Have fun practicing basic addition and subtraction operations with and without carried.
You can learn from the most basic operations with a digit, to more complex operations that have two or three digits.
Write the numbers as if it were a blackboard, you can also write each digit with the color of your choice.
You can paint each number with a different color depending on the position it occupies (unit, ten or hundred)
To check your result, click on the upper right corner of the blackboard.