Understanding irrational numbers

What makes a number irrational?

• It can be expressed as a fraction.

• It has a repeating decimal pattern.

• It cannot be expressed as a fraction of two integers.

• It is a whole number.

Tags

CCSS.8.NS.A.1

Which best describes an irrational number?

• Any number that can be expressed as a fraction
• A positive or negative whole number.
• A number that is a non-terminating, non-repeating decimal.
• A perfect square.

Tags

CCSS.8.NS.A.1

What is true about irrational numbers?

• They are terminating decimals.

• They are non-repeating decimals and the decimal does not terminate.

• They are fractions.

• They are natural numbers.

Tags

CCSS.8.NS.A.1

Which number out of the given numbers is irrational?

• √64
• 1/2
• √64/4
• √20/5

Tags

CCSS.8.NS.A.1

Which one of these is an irrational number?

• π / π

  _{be careful!}

• 0.1234567...

• 3√4

• -0.74747474...

Tags

CCSS.8.NS.A.1

Which of the following numbers is irrational?

• $\sqrt{8}$

• $\frac{3}{4}$

• $2$

• $-1.325$

Tags

CCSS.8.NS.A.1

Which of the following is an irrational number?

• $\sqrt{0}$

• $\sqrt{3}$

• $1\overline{.36}$

• $-0.19$

Tags

CCSS.8.NS.A.1

Determine which of the following examples is irrational.

• A fraction whose denominator is larger than its numerator

• A decimal that never ends but repeats

• A perfect square root

• A decimal that never ends and never repeats

Tags

CCSS.8.NS.A.1

Square root of: 9

• Rational

• Irrational

Tags

CCSS.8.NS.A.1

Is

 $\sqrt{7}$ rational or irrational?

• Rational

• Irrational

Tags

CCSS.8.NS.A.1