【實用教育app】Mental Math Trainer|最夯免費app-綠色工廠好玩App

Mental Math Trainer

Choose a lowest number and a highest number, the exercise will be generated with the chosen operation(or random) and 2 random numbers in the range of the numbers you chose.

"Mental calculation comprises arithmetical calculations using only the human brain, with no help from calculators, computers, or pen and paper. People use mental calculation when computing tools are not available, when it is faster than other means of calculation (for example, conventional methods as taught in educational institutions), or in a competitive context."

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