Back in the day there were no calculators so multiplication tables were supposed to be memorized from 1 x 1 up to 12 x 12
a grid that was 12 by 12.
We had classroom contests to complete the worksheet fastest. The speed of my handwriting was the limiting factor in how fast I could complete it.
I haven't written much since computer printers got affordable. My handwriting is almost illegible now as I'm out of practice.