Rational vs Irrational

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio 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

Is 0 a rational number?

Back

Yes, 0 is a rational number because it can be expressed as 0/1.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but not a fraction or decimal.

Front

Is -1/2 a rational number?

Back

Yes, -1/2 is a rational number because it can be expressed as a fraction.

Front

What is a repeating decimal?

Back

A repeating decimal is a decimal fraction that eventually repeats the same sequence of digits.

Front

Is 3.14 a rational number?

Back

Yes, 3.14 is a rational number because it can be expressed as 314/100.

Front

What is the square root of 4?

Back

The square root of 4 is 2, which is a rational number.

Front

Is the square root of 99 a rational number?

Back

No, the square root of 99 is an irrational number because it cannot be expressed as a fraction.

Front

What is an example of an irrational number?

Back

An example of an irrational number is π (pi), which is approximately 3.14159.