ISEE Lower Level Quantitative : Operations

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

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Example Questions

Example Question #121 : Numbers And Operations

Ralph has 5 boxes of apples and each box has x apples. Which of the following represents how many apples Ralph has?

Possible Answers:

Correct answer:

Explanation:

If Ralph has 5 boxes of apples and each box has x apples, that means the total number of apples he has will be 5 multiplied by the number of apples in each box (which is equal to x). 

Therefore,  is the expression that represents how many apples Ralph has. 

Example Question #122 : Numbers And Operations

What is  multiplied by ?

Possible Answers:

Correct answer:

Explanation:

In order to solve for , the decimal point should be moved to the right by one integer for every zero. Given that there are 4 zeros, the decimal point should be moved over by 4 spaces. This resuls in: .

Example Question #123 : Numbers And Operations

What is the value of the expression below?

Possible Answers:

Correct answer:

Explanation:

In order to solve for , the multiplication must first be carried out. This results in:

Example Question #124 : Numbers And Operations

Alejandro has an older brother who is twice as old as him. If Alejandro will be 9 years old in 2 years, how old is his brother now?

Possible Answers:

Correct answer:

Explanation:

If Alejandro will be 9 years old in 2 years, that means he is 7 years old right now. 

Given that Alejandro's brother is twice as old as he is, his older brother must be 14 years old because . Therefore, 14 is the correct answer. 

Example Question #125 : Numbers And Operations

Maria sells cookies by the box. Every box of cookies that she sells earns her 2 dollars. Every case of cookies contains 6 boxes of cookies. If Maria sells 5 cases, how much money does she make in dollars?

Possible Answers:

Correct answer:

Explanation:

If Maria earns 2 dollars for every box of cookies that she sells, and every case of cookies contains 6 boxes of cookies, then she makes  dollars for every case that she sells.

If Maria sells 5 cases, then she makes  dollars.

Example Question #126 : Numbers And Operations

If W is an odd number, which of the following could be an even number?

Possible Answers:

Correct answer:

Explanation:

The easiest way to solve this problem is to select an odd number for W, such as 3. 

2W would be equal to 6, which is even and the correct answer. 

3W is 9 and odd.

 is 5, which is also odd. 

 is 1, which is also odd. 

Example Question #124 : Operations

Which of the following expressions is the smallest?

Possible Answers:

Correct answer:

Explanation:

The above expressions have the following values:

Given that  is the smallest value, the correct answer is:

Example Question #127 : Numbers And Operations

What is four times the sum of a and b?

Possible Answers:

Correct answer:

Explanation:

The sum of a and b should be expressed as . Therefore, four times the sum of a and b is equal to .

Example Question #128 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

Write the following fraction in simplest form:

Possible Answers:

Correct answer:

Explanation:

Divide the numerator and denominator of  by 40 to get , which is the correct answer.  is incorrect because it can be further simplified to 

Example Question #128 : Numbers And Operations

Mandy's dog weighs 20 pounds, and then he increases in weight by 10 percent. How much does Mandy's dog weigh after his weight gain (in pounds)?

Possible Answers:

Correct answer:

Explanation:

If Mandy's dog weighs 20 pounds and then increases in weight by 10 percent, he will increase in weight by 2 pounds because 

Given that , 22 pounds is the dog's new weight. Therefore, 22 is the correct answer. 

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