脳トレ：数直線上のカルク（計算ゲーム）

"▼ Rules
-On the number line, there is a numerical value of the damage that the offense inflicts on the defense.
・ Control this number using the positive and negative integer cards in your hand.
・ Some cards have ✖️ and ➗ attached to the front.
・ On the offense turn, move the number line in the positive direction and aim for great damage!
・ On the defensive turn, move the number line in the negative direction and repel the damage!

▼ Operation method
・ While looking at the numbers on the number line, select the card in your hand and set the card.
・ Based on the opponent's hand, think about how to make the maximum attack on the opponent. "