The best way to develop mathematical skills and confidence in the subject is to clear the basic fundamentals of the subject. This can be easily done with the help of detailed subject worksheets. A lot of effort goes in generating printable maths lessons for children of all ages.
This tool is very important and if you have a small kid and you do not have a worksheet, then its time you got yourself one or created one for your kid. There are a number of sites over the internet that offer free worksheets that are downloadable and printable for use by parents and teachers at home or at school.