Nines for multiplication have tons of little tricks. The one that fascinates my children uses both hands. I'll go through this as though you haven't heard it before.
1. Put both hands out--side by side--in front of your face.
2. When you want to multiply, we'll say 9 X3, begin from the left hand. Put your third finger down (since you are multiplying by 3). If you are looking at your palms, it would be your left middle finger. The number of fingers you have to the left of your bent finger (2) is the tens' place. The number of fingers to the right of your bent finger (7) is the ones' place. Your answer is 27.
3. 9x5 would cause you to bend your left pinkie finger (fifth finger from the left). To the left of the bent finger would be 4 fingers sticking up. To the right of your bent finger would be 5 fingers sticking up. Your answer is 45. It works for all the facts through 9.
Also, the digits to the answers of 9 multiplication facts through 10 and not including 0 always add up to 9.
That's the "trick" that comes to the top of my head. There are many math trick books out there on the market too. Best of luck!