ISEE Middle Level Quantitative : ISEE Middle Level (grades 7-8) Quantitative Reasoning

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

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Example Questions

Example Question #1 : How To Find The Area Of A Rectangle

Which is the greater quantity?

(a) The area of a rectangle with length 20 and width 

(b) The area of a rectangle with length 10 and width 

Possible Answers:

(a) and (b) are equal

(b) is the greater quantity

(a) is the greater quantity

It is impossible to determine which is greater from the information given

Correct answer:

(a) is the greater quantity

Explanation:

The area of a rectangle is the product of its length and its width.

The rectangle described in (a) has area 

The rectangle described in (b) has area 

, and  is positive, so , and . The rectangle from (a) has the greater area.

Note that the value of  has no bearing on the answer, except for the fact that it is positive.

Example Question #2 : How To Find The Area Of A Rectangle

Box

Figure NOT drawn to scale

The above diagram shows a rectangular solid.  is an integer. Which is the greater quantity?

(a) The surface area of the solid

(b) 

Possible Answers:

(b) is the greater quantity

It is impossible to determine which is greater from the information given

(a) is the greater quantity

(a) and (b) are equal

Correct answer:

(a) is the greater quantity

Explanation:

We can fill in a few edge lengths below:

Box

All six sides are rectangles, so their areas are equal to the products of their dimensions. We specifically notice that the top, bottom. front, and back each have area . Since the total of these four areas is  . Since the left and right sides have not been included, the total surface area must be more than .

Example Question #511 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

What is the area of the figure below?

 12

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to split the figure into two rectangles. 

12.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

 

Example Question #512 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

What is the area of the figure below?

11

 

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

11.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #513 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

What is the area of the figure below?

10

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

10.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #514 : Isee Middle Level (Grades 7 8) Quantitative Reasoning

What is the area of the figure below?


9

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

9.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #3 : Find Areas Of Rectilinear Figures: Ccss.Math.Content.3.Md.C.7d

What is the area of the figure below?

8

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

8.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #4 : Find Areas Of Rectilinear Figures: Ccss.Math.Content.3.Md.C.7d

What is the area of the figure below?

7

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

7.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #7 : Find Areas Of Rectilinear Figures: Ccss.Math.Content.3.Md.C.7d

What is the area of the figure below?


6

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

6.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

Example Question #8 : Find Areas Of Rectilinear Figures: Ccss.Math.Content.3.Md.C.7d

What is the area of the figure below?


5

Possible Answers:

Correct answer:

Explanation:

To find the area of the figure above, we need to slip the figure into two rectangles. 

5.5

Using our area formula, , we can solve for the area of both of our rectangles

            

           

To find our final answer, we need to add the areas together. 

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