Rational/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.

Tags

CCSS.5.NBT.A.2

What type of number is π ?

• Rational
• Irrational

Which number is rational below?

• √20
• √64
• 6π
• √7

Irrational numbers...

• can always be written as a ratio of integers

• include decimals that are non-terminating and non-repeating

• can sometimes be perfect squares

• must be negative

√7

• Rational

• Irrational

• real

• not real

-17.5

• Rational

• Irrational

• real

• integer

.141414141414...

• Rational

• Irrational

• real

• not real

What does this number belong to: 
a terminating decimal

• Rational Number
• Irrational Number

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Classify the Number: -23

• Rational
• Real, rational, integer
• integer
• Real, irrational, whole

The set of rational numbers includes all the following except...

• -42
• 5/0
• 0
• 14.7