None of this is true, of course. So, first you need to bite your tongue. Secondly, get your child interested in math from an early age. Math does not have to be about columns and columns of figures, and the sooner you can introduce your child to math in a fun way the better. Mathematics worksheets can help you do this, with pages of fun exercises that will teach your child the basic principles they need. This helps you, as you don't have to write out pages of math exercises and try to make them interesting _ it also helps your child. A good set of kids math worksheets will present math in an exciting way, incorporating lessons of quantity, counting and writing numbers in a way that children understand and relate to. Mathematics worksheets should use different methods to teach your child the principles of addition and subtraction to make sure they understand the concept, not just learn the answers by rote. A decent set of worksheets will use step_by_step methods to help your child progress from the first steps in number recognition and counting, to more complicated sums and word problems.
There are some new materials being developed now based on what we are learning about how the brain learns. These brain_friendly materials should be an improvement over what has existed. I recently bought a book by Marcia L. Tate titled "Mathematics Worksheets Don't Grow Dendrites." I highly recommend her book. She gives a great deal of information on alternative activities that are better for your child's brain development and for learning.