ISEE Lower Level Math : Operations
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Example Questions
Example Question #3 : How To Add
Which of the following is a valid approximation of the problem
Round each number to the nearest whole number:
Add them together:
Therefore, 15 is a valid approximation of the problem. The exact answer is:
Example Question #2 : Addition And Subtraction With Money
George buys four items costing
Approximately how much does he pay in total?
Between 
More than
Less than
Between 
Between 
Between
First, add up all of the values:
Then, decide which of the answer choices approximates this value. Our answer is between 
Another way to solve this problem is to round the four values to their nearest whole numbers and then sum those rounded values:
Example Question #352 : Isee Lower Level (Grades 5 6) Mathematics Achievement
First, find a common denominator. For these two fractions, it is 20. Then, change each fraction to reflect that new denominator. 
Example Question #353 : Isee Lower Level (Grades 5 6) Mathematics Achievement
Estimate 
To estimate, you must first round the numbers given. Round 1389 to 1400. Then, round 592 to 600. Combine 1400 and 600 to get 2000.
Example Question #354 : Isee Lower Level (Grades 5 6) Mathematics Achievement
What is the standard form for writing five hundred twenty-two thousand twenty?
None of these
To determine the standard form for five hundred twenty-two thousand twenty, it is best to take it step by step:
- five hundred thousand =
- twenty-two thousand =
- twenty =
The final answer can be found by adding together these parts.
Example Question #11 : How To Add
Which of the following is true about the set below?
The numbers are all multiples of 4
The numbers are all divisble by 4
None of these
The numbers are all odd
The numbers are all prime
The numbers are all odd
The numbers in the set are all odd, meaning that they are not divisble by 2.
While the numbers in the set increase by 4 sequentially, they are not divisible by 4, and therefore are not multiples of 4.
Thus, the best answer is that they are all odd.
Additionally, the numbers are not prime because 9 and 21 are both divisible by 3.
Example Question #12 : How To Add
Jill is getting ready to go to school. She wakes up an hour before class starts and it takes her 15 minutes to walk to school. If class starts at 8:00, which of the following best describes when she must leave home to be at class on time?
She must leave in 35 minutes in order to leave at 7:45.
She must leave in 45 minutes in order to leave at 7:45.
She must leave in 40 minutes in order to leave at 7:45.
She must leave in 45 minutes in order to leave at 7:25.
She must leave in 45 minutes in order to leave at 7:45.
Given that Jill's class starts at 8:00 and that it takes her 15 minutes to walk there, she must leave at 7:45. Since she woke up an hour before class starts, at 7 am, this means that she must leave in 45 minutes. Therefore, the correct answer is:
She must leave in 45 minutes in order to leave at 7:45.
Example Question #13 : How To Add
Samantha has 17 cookies, Robert has 6 cookies, and Julia has 13 cookies. How many total cookies do they have?
To find the total number of cookies, add each person's cookies together.
Example Question #364 : Numbers And Operations
What is the value of 
To solve, you will need to get 
The left side cancels.
Reduce the right side.
Example Question #364 : Numbers And Operations
Simplify:
To simplify, you must rearrange the expression to group like-terms together.
Like-terms can be simplified.
This results in 
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