Best Seller | Texas Instruments 108-BK-D TI108 -Pack of 10 Our most widely used durable low-cost school calculator. Appropriate for: Math Grades K-3. Negative sign: Appears to the left of the number displayed. Anylite solar power: Operates in low light; never needs batteries. Plastic keys: Tamper proof and... more | | $72.21 FREE shipping go to store |