100 squares calc -time attack-

Enjoy the one hundred squares calculation!
From top to bottom, you make answers in squares.
As soon as you make answer, it is scored.
When you fill all squares by answers, your answer time is recorded.

Please enjoy it!

Game mode:
(1) addition
(2) subtraction
(3) multiplication
(4) 4 operations(addition, subtraction, multiplication, division)

Difficulty:
(1) Normal (from top-Left to bottom-right)
(2) Hard (random sort of landscape)
(3) Very Hard (random sort of landscape / portrait)

Result screen:
You can confirm your weak point by your answer time.

Checked by:
android one (Android 10)