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Scientific Notation and Unit Conversions Flashcards

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

Read the first 6 Scientific Notation and Unit Conversions flashcards as text

  1. Which of the following correctly expresses 0.00045 in scientific notation?

    Answer: 4.5 × 10⁻⁴

    Move the decimal point 4 places to the right to get 4.5, so the exponent is −4. Proper scientific notation has exactly one non-zero digit before the decimal: 4.5 × 10⁻⁴.

  2. Multiply: (3 × 10³) × (2 × 10⁴) = ?

    Answer: 6 × 10⁷

    Multiply the coefficients: 3 × 2 = 6. Add the exponents: 3 + 4 = 7. Result: 6 × 10⁷.

  3. How many millimeters are in 3.5 meters?

    Answer: 3,500 mm

    There are 1,000 millimeters in 1 meter. 3.5 × 1,000 = 3,500 mm. The prefix 'milli-' means one-thousandth.

  4. Which prefix represents 10⁻⁶ (one millionth)?

    Answer: Micro (μ)

    Micro (μ) = 10⁻⁶. Milli = 10⁻³, Nano = 10⁻⁹, Kilo = 10³. Knowing metric prefixes is essential for science calculations.

  5. Convert 5,200,000 to scientific notation.

    Answer: 5.2 × 10⁶

    Place the decimal after the first digit: 5.2. Count how many places you moved left: 6 places. Result: 5.2 × 10⁶.

  6. A sample weighs 2,500 grams. How many kilograms is this?

    Answer: 2.5 kg

    1 kilogram = 1,000 grams. 2,500 ÷ 1,000 = 2.5 kg. 'Kilo-' means 1,000, so you divide by 1,000 to convert grams to kilograms.