How to... Solve Puzzles | How to Multiply Any 2 Numbers (With a Difference of 2) - Quickly Without a Calculator - Tutorial @howto...solvepuzzles | Uploaded 7 years ago | Updated 4 hours ago
This is a great maths trick when you want to multiply any two numbers that have a difference of two (i.e are just two number apart - such as 39 and 41 or 13 and 11). This shortcut method gives you the correct answer quickly and often you can do the calculations in your head. Watch the video for all the details. Impress your friends with your ability to square a number very quickly.
This is a great maths trick when you want to multiply any two numbers that have a difference of two (i.e are just two number apart - such as 39 and 41 or 13 and 11). This shortcut method gives you the correct answer quickly and often you can do the calculations in your head. Watch the video for all the details. Impress your friends with your ability to square a number very quickly.
