D Add : Arithmetic game

・ To display the navigation (△ ◯ ▢) button at the bottom of the screen, swipe up from outside the screen below to display it.
Make the display settings the default.

・Tap the S button and select -10 or -9 as the number to subtract.
Add two numbers in a row to make a one-digit number. When the number added is 2 digits, subtract 10 or 9 to make it 1 digit. Tap the S button to select the subtraction number.(5 + 7-10 = 2)

・ Tap the START button to start the game.
When you press the start button, the numbers to be calculated on the first line are lined up and the clock starts.
The second line adds the above two numbers. If it is 1 digit, enter a number, if it is larger than 9, subtract the 10 or 9 selected with the S button, and tap the 0-9 button below.

・ If you make a mistake, tap the ← button to return and correct.
To correct, tap the ← button once to return.

・ When input is completed, judge with the JUDGE button.
After inputting to the end, tap the JUDGE button. The clock will stop and the number of answers will appear next to A. If you do not press the JUDGE button, no answer will be given and the clock will not stop.If you make a mistake, the cat will judge.

・Tap the RESET button below to initialize the screen.
If you tap the RESET button at the bottom of the screen, the entered number will disappear and you will return to the first screen. Tap the RESET button during the game to reset the screen.

・Tap the START button again to display the earliest time.
After resetting by tapping the RESET button at the bottom of the screen, if you press the START button.
The earliest time you answered correctly is displayed in Toptime together with the number of 9 or 10. The time when the answer is wrong is not displayed.

・ Tap the RESET button next to Toptime to reset the top time.

☆ Enjoy a training game that activates your brain and speeds up calculations!