🧮 Topic Summary
Evaluating expressions with two operations involves following the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division - from left to right, Addition and Subtraction - from left to right). This means we perform calculations inside parentheses first, then exponents, followed by multiplication and division (from left to right), and finally addition and subtraction (from left to right). By consistently applying this order, we can correctly simplify expressions and arrive at the right answer.
This worksheet focuses on expressions with two operations, helping you practice and master this fundamental math skill. Remember to show your work and double-check your answers!
🧠 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Expression |
A. The answer to a division problem. |
| 2. Evaluate |
B. To find the value of an expression. |
| 3. Quotient |
C. A mathematical phrase containing numbers and operations. |
| 4. Sum |
D. The answer to an addition problem. |
| 5. Difference |
E. The answer to a subtraction problem. |
✏️ Part B: Fill in the Blanks
Complete the following paragraph with the correct words:
When evaluating expressions, we must follow the order of __________. This order is often remembered by the acronym __________. According to this order, we perform __________ and __________ before addition and __________. If an expression contains parentheses, we evaluate the expression inside the parentheses __________.
🤔 Part C: Critical Thinking
Explain in your own words why it is important to follow the order of operations when evaluating mathematical expressions. Give an example to illustrate your point.