TECH-045
4 - Fast Multiplication (22 Techniques)
Target: 3s
Ekanyunena Purvena ($\times 9, \times 99, \times 999$)
\"By one less than before\": subtract 1 from left, append 9s complement.
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Relevant Entrance Exams
JEE_MAIN
JEE_ADVANCED
NEET
CET
SSC
BANKING
RAILWAY
CAMPUS
GENERAL
Common Student Traps
- •Applying shortcut when boundary assumptions fail
- •Mental arithmetic carrying slip under time pressure
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Supporting free calculation training for competitive exam aspirants.