Irrational and Irrational Numbers

Irrational numbers

• never end and never repeat.

• can be positive or negative.

• are square roots of perfect squares.

• rational

• irrational

Estimate the square root.

• 9.8

• 9

• 9.3

• 10

What type of number is π ?

• Rational

• Irrational

An Irrational number is ...

• Any positive number that is NOT a fraction, decimal, or zero

• Any positive number, including zero, that is NOT a fraction or a decimal

• Any number (positive, negative, or zero) that is NOT a fraction or a decimal

• Any number that can be written as a fraction; it can be made by dividing two integers

• A real number that goes on FOREVER and DOES NOT REPEAT; because they go on forever and do not repeat, they cannot be written as fractions

True or False: The set of irrational numbers is a subset of rational numbers.

• True

• False

According to the Real Number Chart, CAN "Irrational Numbers be "Rational Numbers"?

• No, because they are completely separate boxes.

• Yes, because they are all Real Numbers.

• A

• B

• C

• D

Which of the following is irrational?

• 0.444444444

• -4/5

• π

• 0.2

√7

• Rational 

• Irrational

• real

• fake