SETS AND SUBSETS OF NUMBERS - FLASHCARD

Front

What is an integer?

Back

An integer is any whole number, including zero, and its opposites (negative whole numbers).

Front

Which of the following is NOT an integer? 32, -9/3, 6/2, 3.5

Back

3.5 is NOT an integer.

Front

What are whole numbers?

Back

Whole numbers are non-negative integers, including zero.

Front

What is a natural number?

Back

Natural numbers are the set of positive integers starting from 1 (1, 2, 3, ...).

Front

Which statement is true? All whole numbers are integers, All natural numbers are rational numbers, All rational numbers are whole numbers, Some integers are whole numbers.

Back

All whole numbers are integers.

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 ≠ 0.

Front

Which of the following is a rational number? 0.75, √2, π, -5.5

Back

0.75 and -5.5 are rational numbers.

Front

What is the difference between integers and whole numbers?

Back

Whole numbers include zero and positive integers, while integers include both positive and negative whole numbers.

Front

What is a counting number?

Back

Counting numbers are the set of natural numbers starting from 1 (1, 2, 3, ...).

Front

Is -3 an integer?

Back

Yes, -3 is an integer.