ISEE Upper Level Quantitative : ISEE Upper Level (grades 9-12) Quantitative Reasoning

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

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Example Questions

Example Question #471 : Isee Upper Level (Grades 9 12) Quantitative Reasoning

44,000,000 can be written in scientific notation as  for some .

Which is the greater quantity?

(A) 

(B) 8

Possible Answers:

(B) is greater

(A) and (B) are equal

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

(A) is greater

Correct answer:

(B) is greater

Explanation:

To write 44,000,000 in scientifc notation, write the implied decimal point after the final "0", then move it left until it is after the first nonzero digit (the first "4").

This requires a displacement of seven places, so  

, and (B) is greater.

Example Question #11 : Exponential Operations

Give the result:

Possible Answers:

Correct answer:

Explanation:

For any two numbers 

We can solve this problem most easily by taking advantage of this pattern, setting 

:

Example Question #11 : Exponential Operations

Raise  to the fourth power and give the result in scientific notation.

Possible Answers:

Correct answer:

Explanation:

Use the properties of exponents to raise the number to the fourth power:

This is not in scientific notation, so adjust:

Example Question #13 : Exponential Operations

Give the result:

Possible Answers:

Correct answer:

Explanation:

For any two numbers 

We can solve this problem most easily by taking advantage of this pattern, setting 

:

Example Question #472 : Isee Upper Level (Grades 9 12) Quantitative Reasoning

Give the cube of   in scientific notation.

Possible Answers:

Correct answer:

Explanation:

This is not in scientific notation, so adjust:

Example Question #11 : Exponential Operations

Which expression is equal to 65,000?

Possible Answers:

Correct answer:

Explanation:

 is equal to 

Move the decimal one place to the right for each number of the exponent with a base ten.

For example, ,  , etc.

 

Example Question #11 : Exponential Operations

Evaluate .

Possible Answers:

Correct answer:

Explanation:

By the Power of a Product Principle, 

Also, by the Power of a Power Principle, 

Combining these ideas,

Example Question #1 : How To Divide Exponents

Possible Answers:

The expression is undefined.

Correct answer:

The expression is undefined.

Explanation:

The numerator is undefined, since 0 raised to the power of 0 is an undefined quantity. Therefore, the entire expression is undefined.

Example Question #2 : How To Divide Exponents

Column A                  Column B

                      

Possible Answers:

The quantity in Column B is greater.

There is not enough information to determine the relationship between the quantities.

The quantity in Column A is greater.

The quantities are equal.

Correct answer:

The quantity in Column B is greater.

Explanation:

Let's simplify both quantities first before we compare them.  becomes because the fractional exponent indicates a square root. We can simplify that by knowing that we can take the square roots of both the numerator and denominator, as shown by: . We can simplify further by taking the square roots (they're perfect squares) and get . Then, let's simplify Column B. To get rid of the negative exponent, we put the numerical expression on the denominator. There's still the fractional exponent at play, so we'll have a square root as well. It looks like this now: . We already simplified , so we can just plug in our answer, , into the denominator. Since we don't want a fraction in the denominator, we can multiply by the reciprocal of , which is 4 to get , which is just 4. Therefore, Column B is greater.

Example Question #1 : How To Divide Exponents

Give the reciprocal of  in scientific notation.

Possible Answers:

Correct answer:

Explanation:

The reciprocal of  is the quotient of 1 and the number;

This is not in scientific notation, so adjust.

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