In this download, you will receive 4 centers.
2 of the Activities: Students choose a card for the total and roll a dice for one of the addends. They solve for the other addend. Similarly, in the subtraction version, they place the card in the start of the equation and the number rolled on the dice in the difference spot. They solve for the missing subtrahend. The sums/totals in this activity involve teen numbers and above 20 numbers.
2 of the Activities: There are 2 math mats. You will need a deck of cards. The students choose 2 cards from the deck. For addition, they place the larger card in the sum spot and one of them in one of the addend spots. They solve for the missing addend. On the subtraction mat, they place the larger card to start the equation, then they place the lower card in the difference spot and solve for the missing subtrahend. The math mat activities have single digit sums/differences.