You'll need some bingo cards (you can find templates online) and some markers or crayons. Create 50 simple math problems and write them on slips of paper. The answers to the problems should be numbers between 1 and 75 (the numbers found on bingo cards), but remember to create problems that don't have duplicate answers. For example, don't have two problems that both have the answer "28." For answers that would fall on the letter "B" on the card, example problems could include 134 -133 = (1), 12 divided by 6 = (2), 27 divided by 9 = (3), and so forth. Place the slips of paper in a hat. Pull them out one at a time and call out the problem. If the student has the answer on her card, she should mark the spot with a crayon. Regular bingo rules apply; when a student gets five spaces in a row, she calls, "Bingo!"
Create a series of 36 math equation puzzles in which the students must figure out what math operation (addition, subtraction, multiplication, or division) must be completed. For example: (8 ? 2) ? (12 ? 10) = 12. The answer would be (8 - 2) x (12 - 10) = 12. Divide the 36 problems into eight groups of four. Split the class into teams. Display a puzzle group on the blackboard and allow teams three minutes to figure out the four equations in that group. One person on each team should be named the captain and record the group's official answers. After three minutes, reveal the next group of puzzles. After eight rounds, the team with the most correct answers wins.
For this game, you will need cards printed with the numbers 1 to 9. You can make them yourself or use ordinary playing cards. Place the cards on the table between two players. Each player takes a turn choosing a card from the pile. The winner is the first player to have a set of three cards that adds up to 15. Consider creating a 15 Game class tournament. You could even make it span a whole year with league standings on the wall of the classroom and play the finals on the last day of school.
This is a variation of the card game Cassino. It's played with an ordinary deck of cards by two to five players. Four cards are dealt to each player and four cards are dealt face up on the table. On his turn, a player has four options. First, the player can take one of the face-up cards and match it to one in his hand and set them aside. Option two is he can take two or more of the face-up cards that add up to a card in his hand and set them aside. (For example, if there is a 3 and 4 on the table and the player has a 7 in his hand, he can take both cards.) Option three involves "building" a card on the table. For example, if there is a 3 on the table, a player with a 5 and an 8 in his hand could place the 5 with the 3 on the table and reveal that he has "built" an 8, which matches the 8 in his hand. Option four is when there are no available matches, the player discards a card onto the table. After each turn, the player should have one less card in his hand. When all players are out of cards, the one with the most cards set aside wins.