Do you know the different methods that could be used in subtraction for kids? One of these different methods is the number line which is considered one of the easiest and most preferred by the kids. Let us tell you more about number lines. Number line is one of the different mathematical methods that kids depend on in different things; counting, adding, subtracting, etc. and since it is one of the easiest that one could depend on out there, it is sometimes considered a little bit difficult with big numbers and require the kids to go through some initial steps first. The whole idea behind number lines is jumping on the numbers on the line forward or backward – according to whether you are adding or subtracting – and the number that will be stopped at will be the final answer that is needed. If you have one digit number in the equation, like 5 + 5, getting the answer from the number line would be easy, which will be the same with subtraction, such as 7 – 4.