Which statement describes a rational number that has a repeating decimal expansion?

Master the Praxis Mathematics (5165) Test. Enhance your skills with flashcards and practice questions, each with detailed explanations. Ace your exam confidently!

Multiple Choice

Which statement describes a rational number that has a repeating decimal expansion?

Explanation:
Rational numbers can be written as a ratio of integers, and when you write them in decimal form, the expansion either stops or eventually repeats. A repeating decimal means the digits go on forever with a fixed block repeating. One-third equals 0.333..., where the digit 3 repeats indefinitely, so it is a repeating decimal. It is rational because it is a ratio of integers. The other options either terminate in decimal (0.25) or are irrational (pi, sqrt(2)), whose decimals do not repeat. Therefore, the number that is rational and has a repeating decimal expansion is one-third.

Rational numbers can be written as a ratio of integers, and when you write them in decimal form, the expansion either stops or eventually repeats. A repeating decimal means the digits go on forever with a fixed block repeating.

One-third equals 0.333..., where the digit 3 repeats indefinitely, so it is a repeating decimal. It is rational because it is a ratio of integers. The other options either terminate in decimal (0.25) or are irrational (pi, sqrt(2)), whose decimals do not repeat. Therefore, the number that is rational and has a repeating decimal expansion is one-third.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy