Right, one way is to use the counting worksheet. You can put a finger on that number on the number line and then find the number on the other side of the equation. There are a lot of different strategies to working arithmetic problems. Remember the goal is to understand what you are doing and be able to explain how you determined your answer. Good, what you have learned to do is one of the major skills to master in arithmetic and in algebra.
Every sport has certain fundamental skills that athletes practice on all the time.
What we do in arithmetic is to practice and develop our fundamental skills so we are prepared to put those skills to us in solving authentic situations. We also practice using tools to help us in our work. The better skilled you are in arithmetic, the better prepared you will be to work all kinds of mathematical problems and to solve problems of all types in your future.