Exam

ISEE Upper Level

Section

Difficulty

Mathematics Achievement

Identifying an Irrational Number

Hard Number Operations Irrational Numbers

Consider the following expressions:

1. $3 + 2 ext{sqrt}(5)$

2. $7 - ext{sqrt}(9)$

3. $4 imes ext{sqrt}(3)$

4. $1.5^2$

Which of these expressions evaluates to an irrational number?

A

1. $3 + 2 ext{sqrt}(5)$

B

2. $7 - ext{sqrt}(9)$

C

3. $4 imes ext{sqrt}(3)$

D

4. $1.5^2$

Hint

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