Rational Irrational Numbers Square Roots and Cube Root

The area of a square is 36 cm².  What is the length of one side?

• 6 cm

• 24 cm

• 9 cm

• 9 cm

A perfect square is a number whose square root is ___________.

• Even

• irrational

• Rational

• Odd

Estimate the square root.

• 4

• 5

• 6

• 7

Which is the best estimate of the square root of 63?

• 7.1

• 7.3

• 7.5

• 7.9

Which number is irrational?

• 9.6

• √45

• 3/8

• 3.4 x 10 ⁵

Which number is rational below?

• √20

• √64

• 6π

• √7

What is the approximate value of √12

• 2

• 3.5

• 4.5

• 6

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.

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

.141414141414...

• Rational 

• Irrational 

• Real

• Imaginary