Even if you know your multiplication table, this trick may come in handy if you are having a brain freeze all of a sudden. First, put your left hand and your right hand up and starting with your left little finger number your fingers as shown below.
Example #1
To do 9 × 5, fold or lower your fifth finger. The fingers to the left of the lowered finger or fifth finger are the tens and the fingers to the right of the lowered finger are the ones.
There are 4 fingers to the left of the lowered finger and 5 fingers to the right of the lowered finger. So the answer is 45!
Example #2
To do 9 × 6, lower your sixth finger. The fingers to the left of the lowered finger are the tens and the fingers to the right of the lowered finger are the ones.
There are 5 fingers to the left of the lowered finger and 4 fingers to the right of the lowered finger. So the answer is 54!
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