ISEE Middle Level Math : ISEE Middle Level (grades 7-8) Mathematics Achievement

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

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Example Questions

Example Question #241 : Geometry

Find the perimeter of a rectangle that has a width of 7in and a length that is three times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 7in.  Because it is a rectangle, the opposite side is also 7in.  We also know the length of the rectangle is three times the width.  Therefore, the length is 21in.  Because it is a rectangle, the opposite side is also 21in.

Knowing this, we can substitute into the formula.  We get

Example Question #21 : How To Find The Perimeter Of The Rectangle

Find the perimeter of a rectangle with a width of 7in and a length that is two times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 7in.  Because it is a rectangle, the opposite side is also 7in.

We know the length is two times the width.  Therefore, the length is 14in.  Because it is a rectangle, the opposite side is also 14in.

Knowing this, we can substitute into the formula.  We get

Example Question #248 : Plane Geometry

Find the perimeter of a rectangle with a length of 36cm and a width that is a third of the length.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the length of the rectangle is 36cm.  Because it is a rectangle, the opposite side is also 36cm.  We also know the width is a third of the length.  Therefore, the width is 12cm.  Because it is a rectangle, the opposite side is also 12cm.

Knowing this, we can substitute into the formula.  We get

Example Question #249 : Plane Geometry

Find the perimeter of a rectangle with a width of 6in and a length that is four times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 6in.  Because it is a rectangle, the opposite side is also 6in.

We know the length is four times the width.  Therefore, the length is 24in.  Because it is a rectangle, the opposite side is also 24in.

Knowing this, we can substitute into the formula.  We get

Example Question #31 : How To Find The Perimeter Of The Rectangle

Find the perimeter of a rectangle with a width of 2cm and a length that is six times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 2cm.  Because it is a rectangle, the opposite side is also 2cm.

We know the length is six times the width.  Therefore, the length is 12cm.  Because it is a rectangle, the opposite side is also 12cm.

Knowing this, we can substitute into the formula.  We get

Example Question #32 : How To Find The Perimeter Of The Rectangle

Use the following rectangle to answer the question:

Rectangle4

Find the perimeter.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, given the rectangle,

Rectangle4

we can see the length is 9cm.  Because it is a rectangle, the opposite side is also 9cm.

We can see the width is 7cm.  Because it is a rectangle, the opposite side is also 7cm.

Knowing this, we can substitute into the formula.  We get

Example Question #251 : Geometry

Find the perimeter of a rectangle with a width of 6in and a length that is three times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 6in.  Because it is a rectangle, the opposite side is also 6in.

We know the length is three times the width.  Therefore, the length is 18in.  Because it is a rectangle, the opposite side is also 18in.

So, we can substitute.  We get

Example Question #34 : How To Find The Perimeter Of The Rectangle

Find the perimeter of a rectangle with a width of 4cm and a length that is three times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 4cm.  Because it is a rectangle, the opposite side is also 4cm. 

We know the length is three times the width.  Therefore, the length is 12cm.  Because it is a rectangle, the opposite side is also 12cm.  

So, we can substitute. 

Example Question #251 : Geometry

Find the perimeter of a rectangle with a width of 6in and a length that is two times the width.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the width of the rectangle is 6in.  Because it is a rectangle, the opposite side is also 6in.  

We know the length is two times the width.  Therefore, the length is 12in.  Because it is a rectangle, the opposite side is also 12in. 

So, we get

Example Question #35 : How To Find The Perimeter Of The Rectangle

Find the perimeter of a rectangle with a length of 16cm and a width that is a quarter of the length.

Possible Answers:

Correct answer:

Explanation:

To find the perimeter of a rectangle, we will use the following formula:

Where a, b, c, and d are the lengths of the sides of the rectangle.

 

Now, we know the length of the rectangle is 16cm.  Because it is a rectangle, the opposite side is also 16cm.  We also know the width of the rectangle is a quarter of the length.  To find the width, we will divide 16 by 4.  Therefore, the width is 4cm.  Because it is a rectangle, the opposite side is also 4cm.

Knowing this, we can substitute into the formula.  We get

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