Real Number System Flashcard (Math 8 2025)

Front

What is the classification of zero?

Back

Zero is classified as a whole number, real number, and integer, but not an irrational number.

Front

What is the formula to find the volume of a cube?

Back

Volume = side length^3.

Front

If a cube has a volume of 27 cubic inches, what is the side length?

Back

The side length is 3 inches.

Front

What is the definition of a whole number?

Back

Whole numbers are non-negative integers, including zero (0, 1, 2, 3, ...).

Front

What is the area formula for a square?

Back

Area = side length^2.

Front

If a square has an area of 64 square cm, what is the side length?

Back

The side length is 8 cm.

Front

What is the square root of 19 approximately?

Back

The square root of 19 is approximately 4.36.

Front

What are irrational numbers?

Back

Irrational numbers cannot be expressed as a fraction of two integers.

Front

Give an example of an irrational number.

Back

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction, while irrational numbers cannot.