How to multiply numbers near to 100

consider two numbers near to 100

e.g 97 and 98

Subtract  both these from 100

100-97 = 3
100 -98 = 2

Now add of them (3+2) = 5
Remove this from 100 i.e. 100-5 = 95

Now mutliply them 3 x 2 = 06

so the result will be 95 and append 06 => 9506

Let us take another example

92 x 97
100 -92 = 8
100-97 = 3

8+3 = 11, remove this from 100 i.e. 89
now multiply 8 x 3 = 24
so the answer is 8924

Try the below

1. 94 x 96
2. 99 x 91