Now this will be an interesting thread. I predict certain people will favour traditional multiplication and division whilst others will try and do methods that help the children actually understand what they are doing. Personally - chunking for division and grid method for multiplication. However schools build up to this over the primary years. Once confident with this, then short division , long division and short multiplication - but some children will just not get that and are happy to do a method they are comfortable with. As long as it gets them the right answer, then that's fine with me. Others might disagree.