Near-100 Multiplication (Below)
Multiply two numbers just below 100, using their "distance from 100".
97 × 94 = 9118
97 is 3 below 100 and 94 is 6 below, so this is (100 − 3)(100 − 6).
Both distances come off the hundreds: 100 − 3 − 6 = 91, the same as 97 − 6.
The corner where the two distances overlap is 3 × 6 = 18, and it goes last.
Your turn
Three to try in your head — tap what you get.
96 × 95
98 × 97
94 × 91
All 36 shortcuts: the Magic Tricks library.