ISEE中产水平定量:如何找到年代quare root

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

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一个ll ISEE Middle Level Quantitative Resources

6 Diagnostic Tests 110 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #11 :Squares / Square Roots

Which is the greater quantity?

(A)

(B)

Possible Answers:

(A) is greater

It is impossible to tell which is greater from the information given

(B) is greater

(A) and (B) are equal

Correct answer:

(A) is greater

解释:

since,.

Since,, and (A) is greater

Example Question #12 :Squares / Square Roots

Which is the greater quantity?

(A)

(B)

Possible Answers:

(B) is greater

(A) is greater

(A) and (B) are equal

It is impossible to tell which is greater from the information given

Correct answer:

(A) and (B) are equal

解释:

The quantities are equal.

Example Question #13 :Squares / Square Roots

Which is the greater quantity?

(A)

(B)

Possible Answers:

It is impossible to tell which is greater from the information given

(A) is greater

(B) is greater

(A) and (B) are equal

Correct answer:

(A) is greater

解释:

, so

This makes (A) greater.

Example Question #14 :Squares / Square Roots

Which is the greater quantity?

(A)

(B)

Possible Answers:

(B) is greater

(A) is greater

(A) and (B) are equal

It is impossible to tell which is greater from the information given

Correct answer:

(A) and (B) are equal

解释:

The quantities are equal.

Example Question #15 :Squares / Square Roots

Which of the following is equal to?

Possible Answers:

Correct answer:

解释:

First, simplify the terms within the square root by multiplying.

Then, solve the sqaure root.

Example Question #16 :Squares / Square Roots

Which of the following is equal to?

Possible Answers:

Correct answer:

解释:

First, evalutate the terms under the radical:

Then, take the square root:

Example Question #17 :Squares / Square Roots

Which is the greater quantity?

(A)

(B)

Possible Answers:

It is impossible to tell which is greater from the information given

(A) and (B) are equal

(B) is greater

(A) is greater

Correct answer:

(A) is greater

解释:

Therefore,.

Since,.

, so, and (A) is greater.

Example Question #18 :Squares / Square Roots

Which of the following is equal to 39?

Possible Answers:

Correct answer:

解释:

is equal to:

Therefore,is the correct answer.

Example Question #19 :Squares / Square Roots

is a positive integer;is a negative integer;.

Which is the greater quantity?

(a)

(b)

Possible Answers:

It is impossible to determine which is greater from the information given

(a) is the greater quantity

(b) is the greater quantity

(a) and (b) are equal

Correct answer:

(a) is the greater quantity

解释:

, then. Sinceis negative, letbe the opposite of. Therefore,.

Two numbers that are each other's opposite have the same square, so

, so, sinceandare positive,

By substitution,

,

and

.

Example Question #20 :Squares / Square Roots

is a positive integer;. Which is the greater quantity?

(a)

(b)

Possible Answers:

(b) is the greater quantity

It is impossible to determine which is greater from the information given

(a) is the greater quantity

(a) and (b) are equal

Correct answer:

(a) is the greater quantity

解释:

If, then by the zero product principle, one or both ofandis equal to 0. Sinceis positive,. Also, sinceis positive,is positive, and. Thus,.

一个ll ISEE Middle Level Quantitative Resources

6 Diagnostic Tests 110 Practice Tests Question of the Day Flashcards Learn by Concept
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