MIND MULTIPLICATION of numbers close to 100

Here is a simpler method to find the product of 2 numbers  close to 100 by just mind calculation

Example 1 : Suppose you want to know 98 x 99

Step 1 :98 is 2 short of 100 so put2 below 98

     98 x 99
      2
Step 2: 99 is 1 short of 100  so put 1 below 99

    98 x 99
     2     1
Step 3: Multiply the 2 numbers put below
  2 x 1 = 2  this will so 02 will be the last part of the answer

Step 4: Subtract diagonally
     98-1 =97
    99 -2 =97
     this would be the first part of the answer so

98 x 99 =9702

Example 2 : 95 x 98

step 1 : 95 x 98
            5
step 2 : 95 x 98
            5      2
step 3 : 5 x 2 = 10

step 4 : 95 - 2 = 93
            98 - 5 = 93    
so answer of 95 x 98 = 9310