+ - mental exercises

By mu chunyu

This is my 200th video! Don't forget to give this video a thumbs up if you enjoyed it. Here are the apps on my Samsung Galaxy Note 3: Nova Launcher Tersus Ic...
Provides the following digit addition, subtraction, addition and subtraction mixed exercises:
· 2-digit and one digit
· 2-digit and two-digit
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(3)
100 - 500
12 years ago