8th grade Rational and Irrational Flashcard

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; it cannot be written as a ratio of two integers.

Front

Give an example of a rational number.

Back

Examples include 1/2, 3, -4, and 0.75.

Front

Give an example of an irrational number.

Back

Examples include √2, π, and e.

Front

How do you convert a fraction to a decimal?

Back

Divide the numerator by the denominator.

Front

What is the decimal equivalent of 1/4?

Back

0.25

Front

What is the decimal equivalent of 3/8?

Back

0.375

Front

What is the next number in the pattern: 36, 49, 64, 81?

Back

100

Front

Order the following from least to greatest: 1/2, 1/8, 1/6, 1/4.

Back

1/8, 1/6, 1/4, 1/2.

Front

Which of the following is rational: π, √25, √12, .211232112421125...?

Back

√25 (which equals 5) is rational.