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OAR Math Skills: Algebraic Expressions Questions and Answers Flashcards

6 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 6 OAR Math Skills: Algebraic Expressions Questions and Answers flashcards as text

  1. Simplify the expression: 3(2x - 4) + 5x

    Answer: 11x - 12

    Distribute 3 to get 6x - 12, then add 5x to get 11x - 12.

  2. If x = -3, what is the value of 2x² - 5x + 1?

    Answer: 34

    Substituting x = -3 gives 2(9) - 5(-3) + 1 = 18 + 15 + 1 = 34.

  3. Which expression is equivalent to (4a³b²)(3a²b⁵)?

    Answer: 12a⁵b⁷

    Multiply coefficients (4×3=12) and add exponents of like bases (a: 3+2=5, b: 2+5=7).

  4. Factor completely: x² - 9x + 20

    Answer: (x - 4)(x - 5)

    Find two numbers that multiply to 20 and add to -9, which are -4 and -5.

  5. Simplify: (5x²y - 3xy² + 2y) - (2x²y + xy² - 4y)

    Answer: 3x²y - 4xy² + 6y

    Distribute the negative sign and combine like terms: 5x²y-2x²y=3x²y, -3xy²-xy²=-4xy², 2y+4y=6y.

  6. What is the result of dividing 15a⁴b³ by 5a²b?

    Answer: 3a²b²

    Divide coefficients (15÷5=3) and subtract exponents (a: 4-2=2, b: 3-1=2) to get 3a²b².