This printable bingo card set on the topic of Algebra has 16 unique items on a 4x4 grid. Each card is randomized so every player gets a different arrangement.
x = 9
x = 8
x = 1
x = 2
x = 3
x = 13
x = 16
x = 17
x = 19
x = 21
x = 26
x = 23
x = 12
x = 14
x = 20
x = 22