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Algebraic Expressions Introduction

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Algebraic Expressions Introduction

Algebraic expressions illustration

📚 Part 1: Understanding Expressions vs. Equations

1. Which of these are expressions? (Check all that apply)

3x + 5

2y = 10

7 - 4n

x + 8 = 12

2. What makes an expression different from an equation?

Expressions have variables, equations don't

Expressions don't have an equal sign, equations do

Expressions are longer than equations

There is no difference

3. Circle the expression:

A) 4x + 9 = 15 B) 6y - 3

🔍 Part 2: Identifying Parts of Expressions

4. Look at the expression: 5x + 8 - 2y

Variables: ________________

Coefficients: ________________

Constant: ________________

Operations: ________________

5. In the expression 3n - 7, what does the number 3 represent?

Variable

Coefficient

Constant

Operation

6. Match each term with its definition:

Variable: A letter that represents an unknown number ____

Coefficient: The number multiplied by a variable ____

Constant: A number by itself ____

Write the letter from: A) 7 in "7x" B) 4 in "2x + 4" C) n in "5n - 1"

✏️ Part 3: Writing Expressions from Words

7. Write an algebraic expression for each phrase:

a) Five more than a number x: ________________

b) Twice a number y: ________________

c) A number n decreased by 8: ________________

8. "The cost of buying 3 apples at $2 each plus a $1 bag"

Write this as an expression: ________________

9. Create your own word phrase and write the expression:

Expression: ________________

10. I Can Statement Check: Circle True or False

I can identify variables, coefficients, and constants in expressions. True / False

I can explain the difference between expressions and equations. True / False

I can write algebraic expressions from word phrases. True / False

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