How to calculate 72 * 202-2 * 76 simply

How to calculate 72 * 202-2 * 76 simply


72*202-2*76
=72*202-2*(72+4)
=72*202-72*2-4*2
=72*(202-2)-8
=14400-8
=14392



A simple algorithm of 198 * 47


Method 1: 198x47
=(200-2)x47
=200x47-2x47
=9400-94
=9306
Method 2
198=2×3×3×11
47×198
=47×11×2×3×3
=517×2×3×3
=（5170-517）×2
=4653×2
=9306
Method 2 is better than method 1



The square of 198 =? Is a simple algorithm and process


198^2
=(200-2)^2
=200^2-2*2*200+2^2
=40000-800+4
=32004



231-198 simple algorithm


231-198=231-200+2=31+2=33

Elden Ring Premiere

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