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Classification of Real Numbers

This worksheet helps students understand and classify real numbers into rational, irrational, integers, whole, and natural numbers.

Grade 9 Math Number SenseClassification of Real Numbers
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Includes

Multiple ChoiceFill in the BlanksTrue / FalseShort AnswerWord BankCustom

Standards

CCSS.MATH.CONTENT.8.NS.A.1CCSS.MATH.CONTENT.HSA.SSE.A.1

Topics

MathGrade 9Real NumbersNumber SenseRationalIrrationalIntegers
8 sections · Free to use · Printable
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Classification of Real Numbers

Name:

Date:

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Read each question carefully and follow the instructions to classify the real numbers.

1. Which of the following numbers is an irrational number?

a

√9

b

3/4

c

π

d

-5

2. All natural numbers are also:

a

Irrational numbers

b

Integers

c

Only whole numbers

d

Negative numbers

3. The set of numbers that includes all positive and negative whole numbers, including zero, is called  .

4. A number that can be expressed as a fraction p/q, where p and q are integers and q is not zero, is a   number.

5. All integers are rational numbers.

T

True

F

False

6. The number 0 is a natural number.

T

True

F

False

7. Give an example of a number that is a whole number but not a natural number.

8. Explain the difference between rational and irrational numbers.

Use the words below to complete the sentences.

Real
Natural
Integers
Whole

9. Numbers used for counting are called   numbers.

10. The set of all rational and irrational numbers together form the   numbers.

11. Plot the following numbers on the number line: -2, 0.5, √4, -1.75

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