Use these as flash cards to improve multiplication and division fact fluency. Point one corner downward and cover, then solve the problem represented by the other two corners of the triangle. The answer will be at the bottom. The division or multiplication sentence is true no matter which way you rotate it! Have students use it to practice by themselves, or practice with each other.
The beauty of these flash cards is that they strengthen the connection between multiplication facts and division facts.
Facts from 1-9 x 1-12
108 cards total.
I included a sheet of the triangles without numbers, in case you want to create your own fact families with the students.