Real number sets #2

Front

What is a whole number?

Back

A whole number is a non-negative integer, including zero. Examples: 0, 1, 2, 3, ...

Front

Is -10 a whole number?

Back

No, -10 is not a whole number.

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as a fraction of two integers, where the denominator is not zero. Examples: 1/2, -3, 4.75.

Front

What are irrational numbers?

Back

Irrational numbers cannot be expressed as a simple fraction. Their decimal representation is non-repeating and non-terminating. Examples: π, √2.

Front

What is a real number?

Back

Real numbers include all rational and irrational numbers. They can be found on the number line.

Front

Is -18.95 a rational number?

Back

Yes, -18.95 is a rational number because it can be expressed as a fraction (-1895/100).

Front

What type of number is 2.75?

Back

2.75 is a rational number because it can be expressed as a fraction (11/4).

Front

What type of number is π?

Back

π is an irrational number.

Front

Is every whole number a rational number?

Back

Yes, every whole number is a rational number because it can be expressed as a fraction (e.g., 5 = 5/1).

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as fractions, while irrational numbers cannot be expressed as fractions.