RAILWAY Track
45 Techniques3 Stages
Railway (RRB NTPC / Group D) Speed Arithmetic Track
Designed for RRB aspirants focusing on quick calculation, percentage problems, time & work, and digital root verification.
Sponsored Learning Partner
Supporting free calculation training for competitive exam aspirants.
Structured Curriculum Stages
3 Stages1
6 techniquesDivisibility & Fast Mental Arithmetic
TECH-001• Diff 1.5
Place-Value Digit Decomposition
TECH-002• Diff 1.5
Digit Complement to Powers of 10
TECH-015• Diff 1.5
Terminal Digit Divisibility ($2, 5, 10$)
TECH-016• Diff 1.5
Last-k-Digits Divisibility ($4, 8, 16$)
TECH-029• Diff 1.5
Left-to-Right Mental Addition
TECH-030• Diff 1.5
Compensation via Nearest Benchmark
2
3 techniquesMultiplication & Squares Shortcuts
3
6 techniquesPercentages, Ratios & Option Elimination
TECH-083• Diff 1.5
Standard Fraction Benchmark Mapping ($1/2$ to $1/20$)
TECH-084• Diff 1.5
Cross-Multiplication Fraction Comparison
TECH-097• Diff 1.5
Compound Ratio Chaining ($A:B$ & $B:C \implies A:B:C$)
TECH-098• Diff 1.5
Cross-Multiplication for Unknown Proportion
TECH-143• Diff 1.5
Unit-Digit Last-Digit Elimination
TECH-144• Diff 1.5
Last-Two-Digits Distractor Pruning
Sponsored Learning Partner
Supporting free calculation training for competitive exam aspirants.