ASVAB Mathematics Knowledge Practice: Scientific Notation - dummies

ASVAB Mathematics Knowledge Practice: Scientific Notation

By Consumer Dummies

Scientific notation is a simple way to deal with long numbers. Because it’s so common, you can expect to run into a few questions on the Mathematics Knowledge subtest on the ASVAB that involve scientific notation.

Practice questions

  1. If you multiply

    ASVAB_0501

    what is the result?

    ASVAB_0502

  2. What number does

    ASVAB_0503

    represent?

    A. 854,345
    B. 8,543,450
    C. 0.0854345
    D. 0.854345

Answers and explanations

  1. The correct answer is Choice (A).

    Multiply the numeric parts of the problem:

    ASVAB_0504

    Multiply the powers of ten by adding the exponents:

    ASVAB_0505

    Write the answer as the product of the two numbers:

    ASVAB_0506

    The first number isn’t between 1 and 10, which means you need to move the decimal point one place to the left and add 1 to the exponent to arrive at

    ASVAB_0507

  2. The correct answer is Choice (D).

    The exponent is –3, which tells you that you need to move the decimal point three places to the left (a positive exponent tells you to move the decimal to the right).