These are the highest-yield techniques for exams like SAT, GMAT, and Banking. Mastering just these 10 will make you faster than 99% of students.
The most famous trick. To square 85, just multiply 8 by the next number (9) to get 72, and append 25. Answer: 7225.
Master Squaring MethodSubtract 1 primarily, then subtract each digit from 9 to get the second half. Magic!
Learn All From 9Multiply ANY two numbers (2-digit, 3-digit, etc.) in a single line. The ultimate speed method.
Learn Vertical & CrosswiseLook at the last digit of a perfect square to instantly guess the root. A must for competitive exams.
Square Roots TrickZero calculation required. If the numerators or denominators follow a pattern, the answer is often zero.
Algebra ShortcutNever lose marks to silly mistakes again. Verify any calculation in 5 seconds using Casting Out Nines.
Learn VerificationAdd or subtract fractions without worrying about finding the Common Denominator first.
Fraction TrickIf 45x + 23y = 113 and 23x + 45y = 91, don't use substitution. Add them, then subtract them.
Simultaneous EquationsFind 15% by solving for 10% and adding half of it. No formulas needed.
Percentage TricksHate subtracting large digits like 8 and 9? Convert them into small negative digits to make math easy.
Learn VinculumDon't try to learn all 10 at once. Pick ONE trick per day. Consistency beats intensity.
📥 Download the Free Cheat Sheet (PDF) to keep on your desk.Vedic and Trachtenberg tricks are powerful, but they work best when you have mastered the basics. Join The Academy to perfect your Addition, Subtraction, and Multiplication skills with fun games and rewards.
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Magic Math! Solve complex calculations instantly just by looking at them. Master the Vilokanam Sutra to spot answers without calculators.
Tired of large digits? Learn to remove 6, 7, 8, and 9 from calculations using Vinculum numbers for faster, simpler mental math.
The secret to Divisibility. Check divisibility for prime numbers like 7, 13, 17, and 19 using the "Osculation" method.