Negative numbers on the number line without reference to zero

The topic  is a topic under the 6th Grade Math Mission. This exercise continues working on the number line but involves non-trivial labeling of points.

Types of Problems
There is one type of problem in this exercise:


 * 1) Tell the value of the dot: This problem has a number line drawn with some of the tick marks labeled and a blue dot. The student is asked to find the value of the blue dot.Nl3-1.png

Strategies
This exercise is medium to get accuracy badges because the scale is not always counting by ones so it may take some thought. The speed badges are easy as soon as comfort with the number line and it's labels is attained.
 * 1) It is not always necessary to figure out the value between the tick marks. It is possible to sometimes jump tick marks if the scale works out well.
 * 2) The answer will always be an integer.
 * 3) To figure out the distance between tick marks take the larger number, subtract the smaller number, and divide by either 1) the number of spaces between the labeled tick marks or 2) one more than the number of the tick marks between the labeled tick marks. Try to figure out why!