Addition subtraction practice

Strengthening computing power in mental arithmetic calculation brain training

You can customize mental arithmetic calculation practice brain Toreapuri.

Number of questions, time, calculation codes, let Kitaeyo the computing power by setting yourself a difficulty!

And analyze your computing power to record well as accuracy rate and answer time.

The records and analysis of a one-time basis, the number of correct answers from using the app, not the number of correct answers, accuracy rate, the answer mean time.

Brain Training, calculation drill, please use as a calculation practice.

[Settings]

Problem set number ... number of questions can be set with no upper limit

Can be set with no maximum number of items in the time limit set ... 1 second increments

Digit set of numbers (left) ... random one digit can be set in to 3-digit number

Sign setting ... random + (addition), chromatography (subtraction) · × (multiplication) can be set in-

Digit set of numbers (right) ... random one digit can be set in to 3-digit number