But another person used the stairs to reach the same floor. This person found it very easy and reach there with little effort. Compare this person to a student who knows all the basic concepts learned in elementary grades. To learn grade six or grade seven math for this student will be easy. But there is another student in grade six and doesn't know the lower grade math concepts such as, times tables, factors or number system. This student is in the same situation as the person, who is jumping to reach third floor from the ground level. From the example it is very clear that mathematics in each grade have the same importance. So, you need to be focused on math in all the grades on all the basic concepts. Ask your teachers lots of questions. Keep asking until you are not clear about the concepts or topics you are working on.
I will admit that there is one type of worksheet that I used in the past and found relatively beneficial, although it had a different kind of flaw. For my Basic Math, Pre_Algebra, and Algebra classes, I had several books of "self_checking" worksheets. These worksheets had puns or puzzle questions at the top, and as the students worked the problems they were given some kind of code for choosing a letter to match that answer. If they worked the problems correctly, the letters eventually answered the pun or riddle. Students enjoyed these worksheets, but there are a couple problem areas even with these worksheets. Some students would get the answer to the riddle early and then work backward from letter to problem answer, so they weren't learning or practicing anything.