MathematicsFreePrintable
Introduction to Mathematical Expressions
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Introduction to Mathematical Expressions 7th grade
📚 Part 1: Understanding Expression Parts
1. Look at the expression: 4x + 7. Which part is the coefficient?
x47+
2. In the expression 3y - 5, what is the constant?
3y53y
3. Which of these are variables? (Check all that apply)
x8a12b
4. How many terms are in the expression 2x + 9 - 3y?
2 terms3 terms4 terms5 terms
✏️ Part 2: Identifying Expression Components
5. For the expression 6a + 2, fill in the blanks:
The coefficient is ________, the variable is ________, and the constant is ________.
6. Circle the variables and underline the constants in this expression:
5x - 8 + 3y
7. Write your own mathematical expression that has:
• One variable
• One coefficient
• One constant
8. Explain in your own words: What is a mathematical expression?
🎯 Part 3: Real-World Connections
9. Sarah has x dollars and buys a toy that costs $15. Write an expression to show how much money she has left:
10. Extension Challenge: Create an expression for this situation: "Tom has 3 times as many baseball cards as his friend, plus 7 extra cards." Use the variable c for his friend's cards.
11. I Can Statement Check: Check the box next to each statement you can now do:
I can explain what a mathematical expression isI can identify variables, constants, and coefficients in expressionsI can explain why expressions are important in mathematics
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