ISEE Lower Level Math : Operations

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

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Example Questions

Example Question #221 : Operations

What is the sum of 4.16 and 1.4?

Possible Answers:

Correct answer:

Explanation:

Write the numbers vertically as one on top of the other and add in the respective columns to get 5.56.

Example Question #222 : Operations

What is the standard form for seven hundred thousand, nine hundred and forty-seven?

Possible Answers:

Correct answer:

Explanation:

 

Seven hundred thousand is equal to 700,000.

Nine hundred is equal to 900.

Forty-seven is equal to 47 .

Thus, 700,947 is the correct answer. 

Example Question #223 : Operations

Find the sum of the following two fractions:

Possible Answers:

Correct answer:

Explanation:

When adding two fractions, you first need to make their denominators match. Find the least common multiple of the two denominators, then convert both fractions so that they both share that denominator. The least common multiple of  and  is , so that will be the new denominator. Convert  into  by multiplying its numerator and denominator by , and convert  into  by multiplying its numerator and denominator by . Then add together the converted fractions. , so  is the correct answer.

Example Question #224 : Operations

Evaluate the following expression:

Possible Answers:

Correct answer:

Explanation:

If you’re having trouble, follow the following steps.  

First, take the first two numbers and add them together.  

Then, take the sum from the operation above and add it to the third number. You can repeat this process (i.e. only adding two numbers at a time, and then adding the next number to the sum) as many times as is necessary.

Example Question #225 : Operations

Evaluate the following expression.

Possible Answers:

Correct answer:

Explanation:

If you’re having trouble, follow the following steps.  

First, take the first two numbers and add them together.  

Then, take the sum from the operation above and add it to the third number. You can repeat this process (i.e. only adding two numbers at a time, and then adding the next number to the sum) as many times as is necessary.

Example Question #226 : Operations

Evaluate the following expression.

Possible Answers:

Correct answer:

Explanation:

If you’re having trouble, follow the following steps.

First, take the first two numbers and add them together.

Then, take the sum from the operation above and add it to the third number.

You can repeat this process (i.e. only adding two numbers at a time, and then adding the next number to the sum) as many times as is necessary.

Example Question #227 : Operations

Evaluate the following expression.

Possible Answers:

Correct answer:

Explanation:

If you’re having trouble, follow the following steps.

First, take the first two numbers and add them together.

Then, take the sum from the operation above and add it to the third number.

You can repeat this process (i.e. only adding two numbers at a time, and then adding the next number to the sum) as many times as is necessary.

The best answer is: 

Example Question #228 : Operations

Possible Answers:

Correct answer:

Explanation:

In order to solve this problem, rewrite the problem vertically, making sure to align or line up the decimal point. Remember to annex zeroes where necessary. In this problem you would annex one zero after the 2, thus making the decimal 34.20, and because 9 is a whole number it is represented as 9.00 as a decimal.

   

 

  

Adding from right to left we get the following. Recall that when a column adds to ten or greater we need to carry the tens digit to the next column.

      

     

    

    

          

          

        

      

   

 

 

Example Question #229 : Operations

Find the sum of 2,365 and 8,501.

Possible Answers:

Correct answer:

Explanation:

To find the sum, we will add the two numbers together.  So, we line the numbers up by the place values starting from the right.  Then, we add from right to left. So, we start with

Step1

Now, we add the right most numbers.  We get

Step2

We add the next numbers.  We get

Step3

We add the next numbers.  We get

Step4

We write the comma.  We get

Step5

Now, we add the last numbers.  We get

Step6

Therefore, the final answer is 10,866.

Example Question #224 : Operations

Evaluate the Following Expression

Possible Answers:

Correct answer:

Explanation:

If you’re having trouble, follow the following steps.

First, take the first two numbers and add them together.

Then, take the sum from the operation above and add it to the third number.

You can repeat this process (i.e. only adding two numbers at a time, and then adding the next number to the sum) as many times as is necessary.

 

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