ISEE Lower Level Quantitative : Lines

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

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Example Questions

Example Question #4 : How To Find Symmetry Of A Line

The length of a certain line is  inches. If this line is cut in half, how long is each half?

Possible Answers:

Correct answer:

Explanation:

Divide the length of the line by 2 to find the length of each half:

Example Question #5 : How To Find Symmetry Of A Line

How many lines of symmetry does an octagon have?

Possible Answers:

Correct answer:

Explanation:

A line of symmetry is the imaginary line that you draw through a shape so that you can fold the image over the line and have both halves match exactly. Any regular shape has as many lines of symmetry as it does sides. Since an octagon has eight sides, the correct answer is .

Example Question #4 : How To Find Symmetry

Ms. Johnson is knitting a blanket for her grandson. She has a piece of yarn that is exactly  feet long however, she only needs half of the piece of yarn. What is the length of the piece of yarn that Ms. Johnson needs to make the blanket for her grandson? 

Possible Answers:

 

 

 

 

 

Correct answer:

 

Explanation:

Ms. Johnson started with  feet of yarn, however she only needs half of the  feet.

To find the length of the amount of yarn that she needs, divide  in half. 

The solution is: 

                        


Example Question #11 : Lines

Mr. Thomas' rectangular garden has a width of  feet. The length of his garden is exactly half the distance of the width of the garden. How long is the length of Mr. Thomas' garden? 

Possible Answers:

 

 

 

Correct answer:

 

Explanation:

The length of Mr. Thomas' garden is exactly half the distance of the width of the garden.

The width of the garden is  feet.

Thus, the length is equal to,

 

Example Question #1511 : Isee Lower Level (Grades 5 6) Quantitative Reasoning

Celeste is Debra's  year old daughter. Both Debra and Celeste measured their height on the wall. Celeste was surprised to find out that she is exactly half the height of her mother. If Debra is  feet tall, how tall is Celeste?  

Possible Answers:

  

 

 

Correct answer:

Explanation:

Debra is  feet tall. Celeste is half the height of her mother Debra.

Thus, to find Celeste's height, divide  in half. 

The solution is:

Step one: convert  into an improper fraction.

                           


Step two: divide  by .



Step three: express  in feet as a mixed number. 



Example Question #11 : Lines

Mr. Lam is planning on painting a rectangular wall in his living room. Before he starts painting, he decided to take a few measurements of the wall. He finds out that the width of the wall is twice the measurement of the height of the wall. If the width of the wall is  feet, what is the height of the wall?   

Possible Answers:

  

 

Correct answer:

  

Explanation:

Since the height of the rectangular wall is half the length of the width, divide  by  

The solution is:



Check:



Example Question #12 : Lines

The cable on Ryan's new cellphone charger is twice as long as his old cellphone charger cable. If Ryan's new cellphone charger has a  feet long cable, how long was his old charger cable? 

Possible Answers:

 

 

Correct answer:

Explanation:

To find the length of Ryan's old cellphone cable, divide the length of his new cellphone charger in half. 

The solution is: 

Example Question #12 : How To Find Symmetry

Line segment  is twice as long as line segment . If line segment  is  inches, how many inches is ?

Possible Answers:

 

 

 

Correct answer:

 

Explanation:

The length of line segment  is half the length of line segment .

Therefore, divide  by 

Example Question #13 : How To Find Symmetry

 Line segment  is twice as long as line segment . If line segment  is  centimeters, how many centimeters is line segment ?

Possible Answers:

 

 

 

 

Correct answer:

 

Explanation:

To find the length of line segment , divide the length of line segment .
Therefore, the length of line segment  is:

Example Question #14 : How To Find Symmetry

Find the midpoint between coordinate points  and .

Possible Answers:

Correct answer:

Explanation:

To find the midpoint between these two coordinate points, use the formula,

Since our  and our  the midpoint formula becomes,

.

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