4×4 MULTIPLICATION

              1 2 2 1
           × 1 1 2 2
         ____________
           1,369,962

STEPS
1) MULTIPLY 2×1=2;PUT IT AT UNITS PLACE.
2) MULTIPLY 2×2=4 & 2×1=2
3) ADD 4+2=6; PUT IT AT TENS PLACE.
4)MULTIPLY 2×2=4;2×2=4;1×1=1
5)ADD 4+4+1=9;PUT IT AT HUNDREDS PLACE.
6)MULTIPLY 2×1=2; 2×2=4;1×2=2;1×1=1
7)ADD 2+4+2+1=9; PUT IT AT THOUSANDS PLACE.
8)2×1=2; 1×2=2;1×2=2
9)ADD 2+2+2=6;PUT IT AT TEN THOUSANDS PLACE.
10)MULTIPLY 1×1=1 & 1×2=2
11)ADD 1+2=3;PUT IT AT LAKHS PLACE.
12)MULTIPLY 1×1=1;WRITE IT AT TEN LAKHS PLACE.
13)WE HAVE 1,369,962 IN ONE LINE.
 
     NOW DO THE 4× 4 MULTIPLICATION ON ONE LINE.
     
     FOLLOW NEXT POST FOR NEW TECHNIQUE.