I don't know how to approach multiplying numbers by 7 purely inside my head without any external help, how do you multiply a number by 7 inside your head?
I hate the 7's, too.

But at least some of the products involve other numbers that are easy. I mean, 7*1 is 7, right? And 7*2 is 14.
You've probably memorized the 9's, so you've got 7*9 = 63. The square is probably easy, too; 7*7 = 49. Also, 7*3 = 21 and 7*4 = 28 seem kinda easy, somehow. I know the 5's, so 7*5 = 35 is okay.
It's the 7*6 and 7*8 where I have trouble.
For 7*6, I cheat, I guess you could call it. I know that 6*6 = 36; 7*6 is one more 6 added on, so 7*6 = 36 + 6 = 42.
I haven't been able to find a trick for 7*8, other than knowing that there's a multiple of 7 that equals 56, so 7*8 must be the 56. But you could cheat for this one, too. You know that 8*8 = 64, and 7*8 is one 8 less than 64, so 7*8 = 8*8 - 8 = 64 - 8 = 56.
If you come across a better method, please return here and share!
