Lesson 2-3 Real Numbers Practice (Vocab.)

Front

What is a rational number?

Back

A rational number is a number that can be written as a fraction.

Front

What is an irrational number?

Back

An irrational number is a number that cannot be written as a fraction.

Front

What type of number is 0?

Back

0 is a whole number.

Front

What are whole numbers?

Back

Whole numbers are zero and the positive numbers (0, 1, 2, 3, ...).

Front

Is the number 1.5 rational or irrational?

Back

1.5 is a rational number because it can be expressed as 3/2.

Front

Is the number π rational or irrational?

Back

π is an irrational number.

Front

What is a non-perfect square?

Back

A non-perfect square is an irrational number.

Front

What is a repeating decimal?

Back

A repeating decimal is a decimal that has digits that repeat infinitely, like 0.141414... which is rational.

Front

Can a rational number be a repeating decimal?

Back

Yes, a rational number can be a repeating decimal.

Front

What is an example of an irrational number?

Back

An example of an irrational number is √2.