"Subtraction Math Challenge" Game

Subtraction Math Challenge is an educational puzzle game for discovering a child's math skills. Each level has subtraction examples on the game board. The entertainment is presented by a quiz: for each question you have to choose the answer from 4 possible variants. The first simple tests offer easy one-action examples. At higher levels you'll have to perform tasks that will be much more difficult. There is a time limit for passing the level. The game will have to start over in 2 cases: if the time has expired or a mistake has been made.