Rational and Irrational Numbers

What is a rational number ?

• A rational number  is a number that cannot be written as a fraction.
• A rational number is a number that can be written as a fraction.
• A rational number cannot be a repeating  decimal.

What type of number is π ?

• Rational
• Irrational

The √98 falls between what two numbers on a number line?

• 10 and 11
• 11 and 12
• 9 and 10
• 90 and 100

Which statement is true? 

• The number ⅚ is irrational
• The number 0.345345345 is irrational
• The number (4π/16π) is irrational
• The number (√11)² is rational

Which number is rational below?

• √20
• √64
• 6π
• √7

In between what two integers is the square root of 77?

• 5 and 6
• 6 and 7
• 7 and 8
• 8 and 9

List the following numbers from least to greatest:
-64 , 3.5 , √27 , 6.666...

• -64 , 3.5 , √27 , 6.666...
• 3.5 , √27 , 6.666..., -64
• 3.5, -64, √27, 6.666...
• 6.666, √27, -64, 3.5

Which of the following is irrational?

• 0.444444444

• -4/5

• π

• 0.2

Irrational numbers...

• reduce to π

• never end and never repeat

• can sometimes be perfect squares

• must be negative

√4

• irrational
• rational