4:12 How to Instantly Multiply ANY number under 20: Easy Quick Math Trick tecmath 29.6K views - 1 year ago
9:36 Percentages, Ratios, Conversions....One trick to work them ALL out tecmath 16.4K views - 2 years ago
8:52 How to Solve Simultaneous Equations in under 10 Seconds - Algebra Math Trick tecmath 42.2K views - 2 years ago
7:14 How to Convert Decimals To Fractions - Math trick for recurring decimals tecmath 63.4K views - 3 years ago
5:37 Solve Percentages in Your Head in seconds -» Easy Percentage Trick tecmath 108K views - 3 years ago
1:37 How Many Faces, Edges And Vertices Does A Rectangular Prism Have? tecmath 115.8K views - 3 years ago
1:51 How Many Faces, Edges And Vertices Does A Octagonal Prism Have? tecmath 22.8K views - 3 years ago
1:28 How Many Faces, Edges And Vertices Does A Square Pyramid Have? tecmath 191.2K views - 3 years ago
1:20 How Many Faces, Edges And Vertices Does A Triangular Prism Have? tecmath 108.4K views - 3 years ago
1:48 How Many Faces, Edges And Vertices Does A Hexagonal Prism Have? tecmath 52.7K views - 3 years ago
1:31 How Many Faces, Edges And Vertices Does A Triangular Pyramid Have? tecmath 86.2K views - 3 years ago
15:25 Good Will Hunting Math Problem Explained Are You Smarter than an MIT Math Professor? tecmath 14K views - 3 years ago