[memyselfandi59]

We homeschooled, used Saxon Math books, and they always had sections of, what they called, Mental Math. All that meant was no paper and pencil allowed, much less a calculator.

I have a book called Test Your Math IQ (someone gave it to me as a present) and I enjoy solving the problems, just to keep my math skills alive (even though I’ve almost hit the big 60)
it’s good to keep your brain nimble doing word problems and such.

[piroque]

We home schooled, used Saxon Math books, and they always had sections of, what they called, Mental Math. All that meant was no paper and pencil allowed, much less a calculator.

Back in the old days when I was in high school, my math teacher graded all test with a blank piece of paper. The more you worked in your head even if you missed a few the better the grade.