The math teacher said, "Please ___ each expression on the board. Show your work so that I can see how you found the value."
The math teacher said, "Please evaluate each expression on the board. Show your work so that I can see how you found the value."
To evaluate an expression means to find its numerical value. You need to substitute the given values (if any) into the expression, perform the required operations according to the order of operations (PEMDAS/BODMAS), and simplify the expression until you obtain a single numerical value. It is important to show your work so that the teacher can understand and follow your calculations.
Here's an example to illustrate the process of evaluating an expression:
Expression: 2 * (4 + 3) - 5
Step 1: Start by simplifying the parentheses.
4 + 3 = 7
Step 2: Perform the multiplication within the expression.
2 * 7 = 14
Step 3: Finally, subtract the value of 5.
14 - 5 = 9
So, the value of the expression 2 * (4 + 3) - 5 is 9. Remember, it is important to show your steps and work in order to receive full credit from your math teacher.