D Add2L:Arithmetic Game

It is a game that competes for the time to arrange one digit number by addition two numbers arranged by inverted triangle calculation.
When you tap the start button, 10 numbers will be lined up on the first line. add two numbers in succession and enter them below.

・ 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 the number to be ± (added or subtracted), ± 9 to ± 18.

Addition two side-by-side numbers to make a one-digit number.
When the number addition becomes 2 digits, add or subtract ± 9 to ± 18 to make it 1 digit.
Tap the S button to select the number to use.
　example When ± 10 is selected.
If the numbers lined up are 1 and 9, then 1+9 = 10, which is two digits, so subtract 10 and enter one digit 0.

・ 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 addition the above two numbers.
If it is 1 digit, enter it. If it is 2 digits, use the ± 9 to ± 18 selected with the S button and tap the 0 to 9 button below to enter the 1 digit number.
If the calculated number is negative, enter the number with the 0-9 button and then tap the -(minus) button next to the START button to make it a negative number.
　detailed explanation
If the two numbers in a row are 5 and 2, tap the 7 button at 5+2 = 7 and enter 7.
The numbers lined up are 9 and 9, and the number selected with the S button is ± 10, 9 + 9, that is, 18 is 2 digits, so subtract the selected 10 and tap the 8 button.
The numbers lined up are -9 and -9, the numbers selected with the S button are ± 10, -9 + (-9) = -18, -18 + 10 = -8, tap 8 and tap the -(minus) button.

・ 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. If you want to end the game during the game, tap the RESET button 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 to ± 18. 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!