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OAR Math Skills: Algebraic Expressions Flashcards

7 cards from real OAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 OAR Math Skills: Algebraic Expressions flashcards as text

  1. What is the coefficient of x² in the expression 7 - 3x² + 4x?

    Answer: -3

    The coefficient of x² is the number multiplied by x², which is -3.

  2. Simplify: (2x²y)(3xy³)

    Answer: 6x³y⁴

    Multiply coefficients (2×3=6) and add exponents: x^(2+1)=x³, y^(1+3)=y⁴.

  3. Which expression equals zero when x = 3?

    Answer: x² - 2x - 3

    (3)² - 2(3) - 3 = 9 - 6 - 3 = 0.

  4. Translate to an algebraic expression: 'the product of 4 and a number x, decreased by 9'

    Answer: 4x - 9

    'Product of 4 and x' is 4x; 'decreased by 9' means subtract 9, giving 4x - 9.

  5. Simplify: x⁰ + 3x¹ - 2

    Answer: 3x - 1

    x⁰ = 1, so 1 + 3x - 2 = 3x - 1.

  6. What is the sum of 4x² - 3x + 1 and 2x² + 5x - 4?

    Answer: 6x² + 2x - 3

    Add like terms: (4+2)x² + (-3+5)x + (1-4) = 6x² + 2x - 3.

  7. If 2(x + 4) = 3(x - 1), what is x?

    Answer: 11

    2x + 8 = 3x - 3, so 11 = x.