Just Over 100
Multiply two numbers just above 100 in one quick step.
104 × 106 = 11024
104 × 106 is a rectangle split at 100: 10000, 400, 600 and 24.
The three hundred-sized pieces make 100 × 110 — which is 104 + 6, or 106 + 4.
Only the small corner is left: 4 × 6 = 24, so 104 × 106 = 11024.
Your turn
Three to try in your head — tap what you get.
101 × 106
104 × 107
102 × 102
All 36 shortcuts: the Magic Tricks library.