SPEED MATH PART 2
How to find the square of a two digit number easily Square Means : When any number is multiplied by itself , it is called as the square of a number a) Square plays very important role in mathematics. b) For doing the square of any two digit number having number of shortcuts are there out of that I suggested you one of the best and easy trick for square c) First of all I suggest you must remember squares of first 30 numbers. Upto 20 numbers most of the students already know so remaining number means upto 30, it is very easy to remember. It will also very much helpful to do square of 3 digit numbers. d) After 30 you do not need to worry about that. You just following the process than you will able to do square of reaming 2 digit numbers. Number Square Number Square Number Square 1 1 11 121 21 441 2 4 12 144 22 484 3 9 13 169 23 529 4 16 14 196 24 576 5 25 15 225 25 625 6 36 16 256 26 676 7 49 17 289 27 729 8 64 18 324 28 784 9 81 19 361 29 841 10 100 20 40