Expression evaluation is the heart of the calculator. Understanding order of operations, parentheses, functions and negative numbers prevents many confusing results and syntax errors.
Basic expression workflow
Enter numbers, variables and functions in the same general order you would write them in math class. Press ENTER to evaluate the full expression.
Order of operations
The calculator follows a structured order: functions such as sin( and log(, powers and roots, permutations/combinations, multiplication/division, addition/subtraction, then relational and logical operations. Parentheses are evaluated first.
| Situation | Best practice |
|---|---|
| Complex expression | Use parentheses to make the grouping obvious. |
| Negative number squared | Use parentheses, such as (-3)^2, when the negative sign belongs to the base. |
| Scientific notation | Use the calculator’s scientific notation key rather than typing “x10^”. |
| Long MathPrint template | Use the right arrow to leave the template before continuing. |
Implied multiplication
The calculator recognizes many forms of implied multiplication, such as 2X or 5(1+2). However, explicit multiplication is clearer for students and reduces ambiguity in homework explanations.
Functions and instructions
A function returns a value, such as sin(30) or log(100). An instruction performs an action, such as clearing a drawing or changing a setting. For unusual commands, paste from a menu rather than typing letters.
Interrupt a long calculation or graph
If a graph or calculation takes too long, use the calculator’s interrupt/quit workflow and then adjust the expression, graph window or lists before trying again.