ISEE Middle Level Math : How to add fractions

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

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Example Questions

Example Question #441 : Concepts

Add:

Possible Answers:

 

Correct answer:

Explanation:

Add the numerators and leave the denominators alone:

Answer:

Example Question #442 : Concepts

Subtract:

Possible Answers:

Correct answer:

Explanation:

Subtract the numerators and leave the denominators alone:

Answer: 

Example Question #443 : Concepts

Add:

Possible Answers:

Correct answer:

Explanation:

Because the two fractions have the same denominator, simply add the numerators and leave the denominator as is:

Answer: 

Example Question #51 : How To Add Fractions

Which of the following statements demonstrates the commutative property of addition?

Possible Answers:

None of the examples in the other responses demonstrates the commutative property of addition.

Correct answer:

Explanation:

The commutative property of addition states that two numbers can be added in either order to obtain the same sum. Of the given responses, only

demonstrates this property, so it is the correct choice.

Example Question #444 : Concepts

Add the fractions:

Possible Answers:

Correct answer:

Explanation:

Add the numerators and leave the denominator the same:

Answer: 

Example Question #445 : Concepts

Add:

 

Possible Answers:

Correct answer:

Explanation:

Add the numerators and leave the denominator the same:

Answer: 

 

Example Question #52 : How To Add Fractions

The time is now 10:38 PM. What time will it be in two hours and fifty-two minutes?

Possible Answers:

Correct answer:

Explanation:

It is now 10:38 PM. In  minutes, it will be 11:00 PM; in  minutes, the minutes will read 30, so the time will be 11:30 PM. In another two hours, the hours will read 

,

so the time will be 1:30 AM.

Example Question #53 : How To Add Fractions

Solve the expression.

Possible Answers:

None of these

Correct answer:

Explanation:

Start by solving for the term in parenthesis. We will need to find the least common denominator in order to add the fractions. Since 6 can be multiplied by 2 to get 12, 12 must be the least common denominator.

Convert the fractions so that they share a denominator of 12.

Add the fractions in parenthesis.

Multiply.

You can then simplify the fraction be removing 12 from both the numerator and denominator.

Example Question #54 : How To Add Fractions

Which of the following is the sum of five-sevenths and one-half?

Possible Answers:

The correct answer is not among the other responses.

Correct answer:

Explanation:

Since , express each fraction as its equivalent in fourteenths, and add the numerators, as follows:

Example Question #55 : How To Add Fractions

Add the fractions:

Possible Answers:

Correct answer:

Explanation:

Add the numerators and keep the denominator the same:

Answer: 

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