Rational and irrational numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b is not zero.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

Front

Is -91 an integer?

Back

Yes, -91 is an integer.

Front

Is -91 a whole number?

Back

No, -91 is not a whole number because whole numbers are non-negative.

Front

What is the square root of 2?

Back

The square root of 2 is an irrational number.

Front

What type of number is 0.141414... ?

Back

0.141414... is a rational number because it can be expressed as a fraction (14/99).

Front

What are rational numbers composed of?

Back

Rational numbers include integers, fractions, and both terminating and repeating decimals.

Front

Is -√4 a rational number?

Back

Yes, -√4 is a rational number because it equals -2.

Front

What is an example of a terminating decimal?

Back

0.75 is an example of a terminating decimal.

Front

What is an example of a repeating decimal?

Back

0.333... (which equals 1/3) is an example of a repeating decimal.