Question

What is the estimated length of the pen?

• A. 12 inches
• B. 13 inches
• C. 15 inches
• D. 17 inches

Answer 1

The correct option is C 15 inches

$\text{Say:}$
Let’s find out the estimated length of the pen.

$\text{Steps:}$
$\bullet$ The pen is placed on the scale and the length is marked on the whiteboard.

$\bullet$ The endpoint of the pen lies between 14 and 15 inches.

$\bullet$ So, the estimated length of the pen is around 15 inches.

$\bullet$ Hence, option C is the answer.



$\text{Probing/ error analysis questions}$

Q: Can we say that the estimated length of the pen is 14 inches? Why?
A: Yes, we can say that the estimated length of the pen is 14 inches because the length of the pen is between 14 and 15 inches. So, the estimate is the closest value and both 14 and 15 are equally close. Therefore, we can say that the estimated length of the pen is 14 inches.