Question

If point B is halfway between points A and C, what number does it represent?​

Answer 1

Answer: B represents 7

This problem is asking us to find halfway between 2 and 12.

      [Method One]

12 - 2 = 10

-

10 / 2 = 5

-

2 + 5 = 7

or

12 - 5 = 7

      [Method Two]

$\displaystyle \frac{2+12}{2} =\frac{14}{2} =7$

    [Method Three]

We can count up from 2 and down from 12 until we hit the middle

2    12

3    11

4    10

5    9

6    8

7    7