Simple calculation of 102 * 46
102*46
=(100+2)*46
=4600+92
=4692
Simple calculation of 0.75 × 102 × 2
0.75×102×2=0.75×(100+2)×2=0.75(200+4)=150+3=153
How to calculate 0.45 × 98 simply
Add 10 wealth to the right
0.45×98
=0.45X(100-2)
=45-0.9
=44.1