I helped Jasmin with her homework a little while back. It was almost enjoyable to help a kid understand something previously not understood, but at the same time I never realized how much knowledge I take for granted having, such as 19 - 6. I just know this sort of stuff after years and years of using this information on a daily basis. It's easy to forget that a 7 year old doesn't have my experience.
What I found worked best was to apply the information in a way that she could relate to, which I thought was odd because I was basically setting up a story problem which I thought all kids hate doing. At least, I always hated doing story problems because it forced me to read through a bunch of crap to finally get to the information I needed. That was probably all the Ault genetics in me, though.
For example, when I asked her "What's 19 - 6" she would complain a little, and then have to count down from 19 on her fingers before coming to the end result: 13. However, if I told her "You have nineteen apples and then Vivian (who is notorious for stealing food from his siblings) eats six of them while you're at school. How many are left?", she would answer me, "Thirteen apples" without even thinking about it. Interesting...
I haven't figured out if the key to this sudden ease was the increased amount of time I gave her to process the information by walking through it step by step in a life-applicable scenario, or if numbers are simply harder to process at a young age than things that children can relate to and, in Jasmin's case, have often related to. Who know? Perhaps it's only the act of presenting the question as "Mathematics" that establishes an automatic firewall in the child's brain that reduces their ability to solve critical information, like remembering a repressed trauma.
Who knows... maybe the answer is simple and maybe it's slightly more creepy.
Speaking of slightly more creepy, who is this handsome fellow pinned to Jasmin's desk?
What a hunk.