Tier 2: Classifying Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers, where the denominator is not zero.

Front

Is -5.25 a rational number?

Back

Yes, -5.25 is a rational number because it can be expressed as -21/4.

Front

What is a whole number?

Back

Whole numbers are non-negative numbers without fractions or decimals, including 0 (0, 1, 2, 3, ...).

Front

Is -10 a whole number?

Back

No, -10 is not a whole number because whole numbers cannot be negative.

Front

What is an integer?

Back

Integers are whole numbers that can be positive, negative, or zero (-3, -2, -1, 0, 1, 2, 3, ...).

Front

Is -9 an integer?

Back

Yes, -9 is an integer.

Front

What is the difference between whole numbers and integers?

Back

Whole numbers are non-negative integers (0 and positive numbers), while integers include both negative and positive numbers, as well as zero.

Front

Is -3.5 an integer?

Back

No, -3.5 is not an integer because it has a decimal.

Front

Give an example of a whole number.

Back

17 is an example of a whole number.

Front

What is a negative integer?

Back

A negative integer is any whole number less than zero, such as -1, -2, -3.