Question

on the horizontal number line show how you will round 198.78 to the tens place & write the rounded number. Given picture is a line with 3 slashes.
-l----------l----------l-

Answer 1

If the three slashes are 190, 195, and 200, we can see it as 
-l----------l--------|--l- with the slightly longer line being around 198.78. Since it is clearly closer to the end of the line than the start of the line, we round it to 200