ISEE Middle Level Math : How to multiply fractions

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

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Example Questions

Example Question #31 : How To Multiply Fractions

Simplify the following:

Possible Answers:

Correct answer:

Explanation:

To multiply fractions, we will multiply the numerators together, then we will multiply the denominators together.  When multiplying, we do NOT need the denominators to be the same. So,

We will multiply straight across.  We get

This can be simplified to

Example Question #32 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

When multiplying fractions, we will multiply the numerators together, then multiply the denominators together.  We do NOT have to find a common denominator.  So,

Example Question #33 : How To Multiply Fractions

Para

The above parallelogram, which has been divided into triangles of equal area, has a total area of 120. What is the area of the shaded region?

Possible Answers:

Correct answer:

Explanation:

18 of 24 triangles have been shaded in; this is  of the parallelogram. Since the area of the entire parallelogram is 120, the area of the shaded region is  of 120, or

.

Example Question #34 : How To Multiply Fractions

Hexagon

The above hexagon, which is divided into triangles of equal size, has area 96. What is the area of the shaded region?

Possible Answers:

Correct answer:

Explanation:

7 of the 12 triangles -  of the hexagon - is shaded in. Therefore, the area of the shaded region is  of 96. or

.

Example Question #35 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

When multiplying fractions, we will first multiply the numerators together, then we will multiply the denominators together.  Note that we do NOT need to find a common denominator.

Given the fractions

we will multiply straight across.  We get

Example Question #36 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

To multiply fractions, we will first multiply the numerators, then we will multiply the denominators.  Note that we do NOT need to find a common denominator. 

So, in the problem

we will multiply straight across.  We get

Now, we can simplify.  We can divide each part of the fraction by 2.  We get

Example Question #37 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

To multiply fractions, we will first multiply the numerators, then we will multiply the denominators.  Note that we do NOT need to find a common denominator.  So if we look at the problem,

we will first write  in fraction form, so we can multiply.  We get

Now we multiply straight across.

Example Question #38 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

To multiply fractions, we will simply multiply the numerators together, then we will multiply the denominators together.  Note that we do NOT need to find a common denominator.  So,

Example Question #39 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

To multiply fractions, we will first multiply the numerators, then we will multiply the denominators.  Note that we do not need to find common denominators.  So,

Example Question #40 : How To Multiply Fractions

Multiply the following:

Possible Answers:

Correct answer:

Explanation:

When multiplying fractions, we will simply multiply the numerators together, then the denominators together.  Note that we do NOT need to find a common denominator.  So,

we multiply straight across.  We get

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