#times9

Here's a trick to times numbers by 9 that works up to 9x9 (if you find a pattern for 9x10 please tell me because I can't find it) that I worked out in 2nd grade because I struggle to multiply numbers higher than 6 in my mind and common core hated me for it.

9x5=?

Minus 1 from whatever "non 9" number you have

5-1=4 (this is your tens place)

Then count back up to 9 from that tens place number

4+[5]=9 (5 is your ones place)

So there you go. 9x5= 45

9x8=?

>8-1=7

>7+[2]=9

9x8=72

9x6=?

>6-1=5

>5+[4]=9

9x6=54