Friday, July 10, 2015

Multiplication Tips



                                        
                                 
                                                                                  Squares and Square Roots
                                                           Cubes and cube roots
                      Multiplication with 2: add the number to itself (example 2×5= 5+5)

Multiplication with 5:the last digit is always  5 and 0
is always half of 10× (Example: 5x8 = half of 10x8 = half of 80 = 40)

Multiplication with 6:when you multiply 6 by an even number, they both end in the same digit.
Example: 6×2=12, 6×4=24, 6×6=36, etc
 

Multiplication with 9: the last digit goes 9, 8, 7, 6

                    Multiplication with 10 : put 0 after that number.

                    Multiplication with 11: till 9 ,two digits are repeated
                                          11*4=44
                                        After 11*12= 1(1+2)2 =132 in between the numbere middle number is addition of two digits of particular number.

                     Multiplication with 12: multiply first with 10 and multiply given number with 2 add both.example: 12*2 =(10*12)+(10*2)

Multiplication by easy way: