Real Number System Flashcard

Front

Which of the following are natural numbers?

-3

,

1.5

,

0

,

2

Back

2

Front

What are the whole numbers?

Back

0, 1, 2, 3, ... and so on

Front

Which of the following are integers?

-1, -2, -3, ...

,

0, 1, 2, 3, ...

,

1.5, 2.5, 3.5, ...

,

1, 2, 3, ...

Back

-1, -2, -3, ...

Front

What is the set of rational numbers represented by? Options: W, N, Q, R

Back

Q

Front

Which of the following are rational numbers?

√2

,

3.14

,

π

,

0.75

Back

0.75

Front

Examples of rational numbers: √5, 0.5, 2; 3.14, -7, 1.5; 0.75, 2/3, -4; √2, π, -5

Back

0.75, 2/3, -4

Front

What are irrational numbers?

Back

Numbers that cannot be written as a fraction

Front

Examples of irrational numbers: 3.14, -7, 1.5; 0.75, 2/3, -4; √5, 0.5, 2; √2, √5, π

Back

√2, √5, π

Front

What is the square root of 9?

Back

3

Front

What is an imaginary number?

Back

A number that cannot be written as a fraction