Nine's Trick

Today in math we learned a trick to help us remember our 9's times tables. To multiply by nine on your fingers, hold up ten fingers - if the problem is 9 × 8 you just tuck under your 8th finger. The fingers to the left of the 8th finger are tens. The fingers to the right are ones. 7 fingers to the left=70. 2 fingers to the right= 2. 9 × 8=72. If the problem is 9 × 7 just put down your 7th finger: 6 fingers to the left = 60 3 fingers to the right= 3. 9 × 7= 63.