ISEE Lower Level Math : Operations

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

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Example Questions

Example Question #21 : How To Multiply

Which expression is equal to 24?

Possible Answers:

Correct answer:

Explanation:

Remember the order of operations, so work inside parentheses first:

Then everything else:

Example Question #22 : How To Multiply

What is the product of  and ?

Possible Answers:

Correct answer:

Explanation:

The term "product" indicates multiplication. 

Example Question #22 : How To Multiply

Which expression is equal to ?

Possible Answers:

Correct answer:

Explanation:

One should use order of operations (PEMDAS) to solve this equation. In the equation , order of operations says to first solve the expressions inside the parentheses:

.

Multiplication is next in this equation, according to order of operations:

.

Subtraction comes last:

Example Question #23 : How To Multiply

What is the product of  and ?

Possible Answers:

Correct answer:

Explanation:

A product is the result of a multiplication problem.

.

Therefore, the product of  and  is equal to .

Example Question #24 : How To Multiply

Yesterday, Joe's dad worked for 7.5 hours at a rate of $12.50 per hour. Approximately how much money did he earn yesterday?

Possible Answers:

$60

$166

$75

$125

$95

Correct answer:

$95

Explanation:

First look at the answer choices. They are all at least $15 apart from one another, so we know that we can approximate the answer without worrying about being off by $1 or so.

Let's round 7.5 hours up to 8 hours, and then $12.50 down to $12. Working 8 hours at a rate of $12 per hour gives us a total earnings of $96. The closest answer choice is $95, so that's our answer.

The exact total is in fact $93.75, which is very close to both the answer choice and our approximation.

Example Question #191 : Isee Lower Level (Grades 5 6) Mathematics Achievement

Find the product.  Round to the nearest tenths place.

Possible Answers:

Correct answer:

Explanation:

Multiply  vertically.

After finding the product, don't forget to move the decimal in FOUR places because each number has 2 decimal places .

The product is .

Then, round to the nearest tenths place .

Example Question #24 : How To Multiply

What is a reasonable estimate for

Possible Answers:

Correct answer:

Explanation:

First, estimate each number. 2.3 rounds to about 2, while 3.1 rounds to about 3. Then, mulitply 2 and 3.

Example Question #25 : How To Multiply

How many millimeters are in 6 meters?

Possible Answers:

Correct answer:

Explanation:

There are 1,000 mm in each meter. Therefore, you must multiply 6 by 1,000 to get 6,000 millimeters.

Example Question #194 : Isee Lower Level (Grades 5 6) Mathematics Achievement

A wooden board is  feet long. What is the length of the board in inches?

Possible Answers:

Correct answer:

Explanation:

There are  inches in a foot. If the board is  feet long, you would multiply this length by the conversion to get the number of inches. 

To simplify the multiplication, you can break up the decimal:

 is the correct answer.

Example Question #28 : How To Multiply

What is the square root of 144?

Possible Answers:

 

Correct answer:

Explanation:

The square root operation is the inverse of a number raised to the second power. In other words, we are looking for the number that, when squared, equals 144.

When the number 12 is multiplied by itself, the product is 144.

Therefore, 12 is the correct answer. 

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