SSAT Upper Level Math : Number Concepts and Operations

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #3 : How To Find Fractional Percentages

Find the sum of .  Express the final answer as a fraction.

Possible Answers:

Correct answer:

Explanation:

Convert the  into fraction form by dividing this by .

Add the two fractions.

First find the common denominator by multiplying the current denominators together.

Now convert each fraction into an equivalent fraction with the new, common denominator.

Example Question #4 : How To Find Fractional Percentages

What percentage of  is ? Round to the nearest hundredth.

Possible Answers:

Correct answer:

Explanation:

Set up a mathematical equation such that the percentage of the number is divided by 100. Solve for the unknown value.

The correct answer is .

Example Question #5 : How To Find Fractional Percentages

Each of a set of balls is marked with a letter of the English alphabet. Each vowel is represented by five balls; each consonant, three. What percent of the balls are marked with vowels? (Nearest whole percent)

Note: For purposes of this problem, "Y" is considered a consonant.

Possible Answers:

Correct answer:

Explanation:

There are five vowels, each represented by five balls; this is a total of

balls with vowels.

There are twenty-one consonants, each represented by three balls; this is a total of 

 

balls with consonants.

There are  balls total of which 25 out of 88 are marked with vowels. This represents 

 

of the balls, so 28% is the correct choice. 

Example Question #1 : How To Find Consecutive Integers

Three consecutive even integers have sum 924. What is the product of the least and greatest of the three?

Possible Answers:

No three consecutive even integers have sum 924.

Correct answer:

Explanation:

Let the middle integer of the three be . The three integers are therefore 

, and they can be found using the equation

The three even integers are therefore 306, 308, and 310, and the product of the least and greatest of these is 

Example Question #2 : How To Find Consecutive Integers

Three consecutive odd integers have sum 537. What is the product of the least and greatest of the three?

Possible Answers:

Correct answer:

Explanation:

Let the middle integer of the three be . The three integers are therefore 

, and they can be found using the equation

The three integers are 177, 179, and 181, and the product of the least and greatest is 

Example Question #493 : Number Concepts And Operations

Four consecutive integers have sum 3,350. What is the product of the middle two?

Possible Answers:

Correct answer:

Explanation:

Call the least of the four integers . The four integers are therefore

,

and they can be found using the equation

The integers are 836, 837, 838, 839. 

To get the correct response, multiply: 

Example Question #3 : Sequences And Series

Three consecutive integers have sum . What is their product?

Possible Answers:

Correct answer:

Explanation:

Let the middle integer of the three be . The three integers are therefore 

, and they can be found using the equation

This contradicts the condition that the numbers are integers. Therefore, three integers satisfying the given conditions cannot exist. 

Example Question #3 : How To Find Consecutive Integers

Three consecutive integers have a sum of . What is their product?

Possible Answers:

Correct answer:

Explanation:

Let the middle integer of the three be . The three integers are therefore 

, and they can be found using the equation

The integers are therefore 103, 104, 105. The correct response is their product, which is

Example Question #6 : How To Find Consecutive Integers

What is the value of  is this sequence?

Possible Answers:

Correct answer:

Explanation:

This is a geometric sequence since the pattern of the sequence is through multiplication.  

You have to multiple each value by  to get the next one.  

The value before  is  so .

Example Question #4 : How To Find Consecutive Integers

Which of the following can be the sum of four consecutive positive integers?

Possible Answers:

None of the other answers are correct. 

Correct answer:

Explanation:

Let , and  be the four consecutive integers. Then their sum would be 

In other words, if 6 were to be subtracted from their sum, the difference would be a multiple of 4. Therefore, we subtract 6 from each of the choices and see if any of the resulting differences are multiples of 4.

Since this only happens in the case of 178, this is the only number of the four that can be a sum of four consecutive integers: 43, 44, 45, 46.

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