draw a number line from 0 to 2 write 3\8 1 and 3\4 and 1.25 on the number line,

To solve this exercise you must apply the proccedure shown below:
 1- You have the following numbers given in the problem above:
 3/81, 3/4 and 1.25
 2- Therefore, you have that 3/81 in decimal form, is: 
 3/81=0.03
 3- 3/4 in decimal form is:
 3/4=0.75
 3- Keeping this on mind,  you can draw the number line from 0 to 2 and write the numbers given above, as you can see in the figure attached.