Multiplying and dividing rational numbers

Determine if the expression below represents a rational or irrational number. 

 $5\sqrt{36}\ -\sqrt{25}$  

• Rational Number

• Irrational Number

If

 $x\ +\ 4\ =\sqrt{7}$  , then x must be a 

• Rational Number

• Irrational Number

The square root of 4/25 belongs to which of the following types of numbers? (There may be one or more answers... please select all answer choices that apply)

• Irrational

• Rational

• Integer

• Whole

• Natural

What happens when you multiply a rational and irrational number together?

• The product is rational.

• The product is irrational.

• Rational

• irrational

Which of the following shows that the product of two irrational numbers can be rational?

• $\sqrt{2}\times\sqrt{\pi}$

• $\frac{2}{\pi}\times\sqrt{2}$

• $\frac{2\pi}{5}\times\frac{2}{\pi}$

• $\pi\times\sqrt{6}$

The square root of a decimal is rational.

• true

• false

• rational

• Irrational

Ms. Finn wants to find the side length of a square that has an area of 150 feet. Should her answer be rational or irrational?

• Rational because 150 is a whole number so it can be written as a decimal.

Carrie is gong to solve the division problem below. Will Carrie's answer be a rational number?

-22/7

• no

• yes