ISEE Middle Level Quantitative : Squares / Square Roots

Study concepts, example questions & explanations for ISEE Middle Level Quantitative

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Example Questions

Example Question #21 : How To Find The Square Root

Simplify the below: 

Possible Answers:

Correct answer:

Explanation:

When breaking down a radical, we first want to find the largest perfect square that might be a factor for the number under the radical. 

We start with 4, 9, 16, 25 etc. until we find which one is a factor. 

In this case, 4 is a factor of 24. 

We can now break down the radical to become: 

The square root of 4 becomes 2 and the square root of 6 will not break down any further, this leads us to the answer below: 

Example Question #22 : How To Find The Square Root

Simplify: 

Possible Answers:

Correct answer:

Explanation:

When breaking down a square root, we must first find the largest perfect square factor that goes into the number under the radical; starting with 4, 9, 16, 25, 36 etc. 

In this case, 36 will go into 72, 2 times. 

Which reduces the radical to the below: 

We can then simplify square root 36 to become 6 and we get: 

When we multiply with a radical, only the numbers outside the radical are multiplied.

 

 

 

Example Question #23 : How To Find The Square Root

Simplify the below: 

Possible Answers:

Correct answer:

Explanation:

We must first simplify each radical by finding the largest perfect square that will go into each number starting with 4, 9, 16, 25 etc. 

For 12, the perfect square of 4 is a factor. 

For 27, the perfect square of 9 is a factor. 

Simplifying both square roots gives us: 

Simplifying the above becomes: 

Both parts of this expression contain a radical 3 which means they are like terms which can be added. 

When we add the 2 and the 3 we get the below: 

Example Question #211 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

Which of the following is equal to  ?

Possible Answers:

Correct answer:

Explanation:

Solve each exponent:

Find the sum:

Find the square root:

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