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Mathematical Reasoning Arithmetic and Number Sense Flashcards

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

Read the first 7 Mathematical Reasoning Arithmetic and Number Sense flashcards as text

  1. What is the least common multiple (LCM) of 8 and 12?

    Answer: 24

    The LCM of 8 and 12 is 24, the smallest number divisible by both.

  2. A store marks up a $45 item by 40%. What is the selling price?

    Answer: $63.00

    40% of $45 is $18, and $45 + $18 = $63.

  3. Which of the following is an irrational number?

    Answer: √7

    √7 cannot be expressed as a fraction and its decimal never repeats, making it irrational.

  4. If 3/5 of a number is 24, what is the number?

    Answer: 40

    Divide 24 by 3/5 (multiply by 5/3): 24 × 5/3 = 40.

  5. What is 2.5 × 10³ written in standard form?

    Answer: 2,500

    10³ = 1,000, and 2.5 × 1,000 = 2,500.

  6. A recipe calls for 2¼ cups of flour. If you triple the recipe, how much flour is needed?

    Answer: 6¾ cups

    2¼ × 3 = 9/4 × 3 = 27/4 = 6¾ cups.

  7. What is the absolute value of -3.7?

    Answer: 3.7

    Absolute value represents distance from zero, so |-3.7| = 3.7.