8:52 How to Solve Simultaneous Equations in under 10 Seconds - Algebra Math Trick tecmath 44.8K views - 3 years ago
6:27 Fast Math Tricks - How to multiply 2 digit numbers up to 100 - the fast way! tecmath 8.3M views - 14 years ago
21:42 Mental Math Tricks - Addition, Subtraction, Multiplication & Division! The Organic Chemistry Tutor 2M views - 9 years ago
1:36 1, 2, 6, 30, ?, 2310. Answer is not 240. Can you solve this IQ test? #math #percentages #ukraine Fast and Easy Maths ! 1.9K views - 3 weeks ago
13:33 How To Calculate Any Square Root. An Ancient Method That Powers Modern Computers MindYourDecisions 2M views - 1 year ago