10-Surds-Rational/Irrational Numbers

What is a surd?

• A square root or other root whose exact value cannot be found.

• Any number that can be written as a fraction.

• A number that can be graphed on a number line.

• A number whose decimal digits run endlessly and repeat.

Which of the following best describes a rational number?

• A number that cannot be expressed as a fraction.

• A number that is a square root whose exact value cannot be found.

• Any number that can be written in the form a/b, where a and b are integers.

• A number whose decimal representation runs endlessly without repeating.

Which of the following is a surd?

Classify each number.

Groups:

(a) Irrational

,

(b) Rational

• 0.8