schwartz.mallory68
schwartz.mallory68 7h ago โ€ข 0 views

expressions and equations unit test grade 7

Hey there, 7th graders! ๐Ÿ‘‹ Getting ready for your expressions and equations unit test? Don't sweat it! I've got you covered with a quick study guide and a practice quiz to boost your confidence. Let's ace this! ๐Ÿ’ฏ
๐Ÿงฎ Mathematics

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jessica_stone Dec 29, 2025

๐Ÿ“š Quick Study Guide

  • ๐Ÿ”ข Variables: Symbols (like $x$ or $y$) that represent unknown numbers.
  • โž• Expressions: Combinations of numbers, variables, and operations (like $3x + 5$).
  • โž– Equations: Mathematical statements that show two expressions are equal (like $2x + 1 = 7$). They have an equals sign (=).
  • โš–๏ธ Solving Equations: Finding the value of the variable that makes the equation true. Use inverse operations (addition/subtraction, multiplication/division) to isolate the variable.
  • โž— Inverse Operations: Operations that undo each other. For example, subtraction is the inverse of addition, and division is the inverse of multiplication.
  • ๐Ÿ’ก Combining Like Terms: Simplify expressions by combining terms with the same variable and exponent (e.g., $3x + 2x = 5x$).
  • ๐Ÿ“ Distributive Property: Multiplying a number by a sum or difference: $a(b + c) = ab + ac$.

Practice Quiz

  1. Which of the following is an expression?
    1. A. $2x + 5 = 11$
    2. B. $3y - 7$
    3. C. $a + b = c$
    4. D. $8 = 8$
  2. Solve for $x$: $x + 5 = 12$
    1. A. $x = 17$
    2. B. $x = 60$
    3. C. $x = 7$
    4. D. $x = 8$
  3. Simplify the expression: $4a + 2a - a$
    1. A. $5a$
    2. B. $6a$
    3. C. $7a$
    4. D. $a$
  4. Which property is illustrated by the equation: $3(x + 2) = 3x + 6$?
    1. A. Commutative Property
    2. B. Associative Property
    3. C. Distributive Property
    4. D. Identity Property
  5. Solve for $y$: $2y - 4 = 8$
    1. A. $y = 2$
    2. B. $y = 4$
    3. C. $y = 6$
    4. D. $y = 12$
  6. Combine like terms: $5x + 3y - 2x + y$
    1. A. $3x + 4y$
    2. B. $7x + 4y$
    3. C. $3x + 2y$
    4. D. $7x + 2y$
  7. What is the value of the expression $3x - 5$ when $x = 4$?
    1. A. $12$
    2. B. $7$
    3. C. $17$
    4. D. $-7$
Click to see Answers
  1. B
  2. C
  3. A
  4. C
  5. C
  6. A
  7. B

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