ISEE Lower Level Math : How to divide

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

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Example Questions

Example Question #31 : How To Divide

Lisa has 12 pieces of candy. She gives one third of the candy to her sister and one third to her brother. How many pieces of candy does she have left?

Possible Answers:

Correct answer:

Explanation:

If Lisa has 12 pieces of candy, one third of this amount is 4 pieces.

Since she gives one third of the candy to her sister, her sister must receive 4 pieces. Similarly, her brother will receive four pieces.

We can find the remining amount by subtracting the amount Lisa gives to her siblings from the original number of pieces.

Lisa has four pieces left.

Example Question #281 : Numbers And Operations

Which of the following is not a prime number?

Possible Answers:

All of these are prime numbers

Correct answer:

Explanation:

A prime number is divisible only by itself and the number 1. In other words, a prime number will only have two factors (itself and 1).

3, 7, and 11 are prime numbers; they cannot be divided by numbers other than themselves and 1.

9, however, can be divided by 3. This gives it more than two factors, and means it cannot be prime.

Example Question #281 : Isee Lower Level (Grades 5 6) Mathematics Achievement

Which of the following is divisible by 8 but not by 12?

Possible Answers:

Correct answer:

Explanation:

The number 32 is divisible by 8 because 4 times 8 is 32. However, 32 divided by 12 equals 2, remainder of 8. Therefore, 32 is divisible by 8, but not by 12, and is the correct answer. 

Example Question #112 : Operations

Betty makes 18 ounces of fruit salad. She puts 2 ounces of fruit salad into smaller containers and then gives them out a club meeting. However, there are only 3 members who attend the meeting. The 3 members take equal numbers of the smaller fruit salads. How many small fruit salads does each member take?

Possible Answers:

Correct answer:

Explanation:

If Betty makes 18 ounces of fruit salad and puts 2 ounces of fruit salad into smaller containers, there will be  small fruit salads. 

Given that the 3 members each take equal numbers of the small fruit salads, each member will get  small fruit salads.

 

 

Example Question #284 : Isee Lower Level (Grades 5 6) Mathematics Achievement

Robert baked 12 cookies for his family to share after dinner. There are 4 members of his family, so everyone should be able to have the same number of cookies. However, his younger brother brought along a friend unexpectedly. 

Robert gave 3 cookies to his brother and 3 cookies to his friend. He then equally shared what remained with his 2 parents. How many cookies did Robert get?

Possible Answers:

Correct answer:

Explanation:

After Robert gives 3 cookies to his brother and 3 cookies to his brother's friend,  cookies will remain. 

If Robert shares the remaining cookies equally with his 2 parents, then Robert and each parent will get  cookies.

 

Example Question #121 : Operations

If Ross has 10 pieces of candy to share among himself and his two friends, how many pieces will be left over if they each get the same number of pieces?

Possible Answers:

Correct answer:

Explanation:

If Ross and his two friends share 10 pieces of candy, they can each have 3 pieces. That leaves one piece that cannot be divided. Therefore, one is the correct answer. 

Example Question #122 : Operations

Beth rides her bike from her house to the store, which is five miles away. It takes her 20 minutes to get there, including five minutes of waiting for a green light.

Excluding the time that she spends waiting, how many minutes does it take her to ride one mile?

Possible Answers:

Correct answer:

Explanation:

If it takes Beth 20 minutes to get to the store, but spends five minutes waiting for a stop light to change, she really spends 15 minutes biking to the store. 

She therefore takes 15 minutes to travel five miles, or three minutes per mile.

 

Example Question #38 : How To Divide

If Annie feeds her dog  ounces of food a day, with how many days' worth of food will  ounces of food supply her dog?

Possible Answers:

Correct answer:

Explanation:

If Annie feeds her dog  ounces of food a day, then  ounces of food will provide for her dog for 5 days because . Therefore,  is the correct answer.

Example Question #123 : Operations

If every whole pizza has  slices, and a basketball team eats  slices of pizza, how many whole pizzas did they eat?

Possible Answers:

Correct answer:

Explanation:

If every whole pizza has  slices, and a basketball team eats  slices, then the number of pizzas that the team eats will be equal to .

Example Question #40 : How To Divide

What is the value of the expression below?

Possible Answers:

Correct answer:

Explanation:

In order to solve , the second fraction must be inverted and multiplied by the first fraction. This gives us:

 

The numerators are multiplied by one another, as are the denominators. 

By dividing the numerator and denominator each by , the fraction can be simplified to , which is the correct answer. 

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