Well math by whatever method is better to have than not. When the so called new math arrived I stopped helping the kids with it.

I guess that was my misteak but I did not want to add any confusion to the mix. Looking back today I think new math was an attempt to formalize the mental process we tend to use consciously or unconsciously.

On the more heavy sledding in math. Even if you do not use it. Since you have been over the road before it is easier to get up to speed again if it is needed.