Another good trick!
I hated my Grade 5 teacher, but she did help me learn my times tables up to 12
Mornings are for coffee and contemplation
- Chief Hopper, Stranger Things
There's a finger trick wit 9s that my dad taught me. I had to number my fingers, the thumb on the left was 1, the pinky was 5, and the thumb on the right was 6 and the pinky was 10. So if you're doing 9X1, you put down finger one, and the answer is 9 because that's how many fingers are left. 9x2, you put down your second finger and you have the 1 and then 8 other other fingers =18. 9x3, put down the 3rd finger, you have 2 and 7, and so on. Complicated to describe in words but it was very easy to learn and helped me at least through 9x9.
The grid format is very good because it allows you to visualize number patterns, which I think is helpful for an overall understanding of numbers. I didn't see that until my kids were learning, though.