3×3 MULTIPLICATION

        1 2 1
    ×  2 3 1
____________
      27951

STEPS
1) MULTIPLY 1×1=1; WRITE IT AT UNITS PLACE.
2) MULTIPLY 1×2=2 & 3×1=3
3)ADD 2+3=5;PUT IT AT TENS PLACE.
4)MULTIPLY 1×1=1;3×2=6 & 2×1=2
5)ADD1+6+2=9;PUT IT AT HUNDREDS PLACE.
6)MULTIPLY 3×1=3 & 2×2=4
7)ADD 3+4=7;PUT IT AT THOUSANDS PLACE.
8)MULTIPLY 2×1=2;PUT IT AT TEN THOUSANDS PLACE.
9)THIS HOW WE GET 27951 IN ONE STEP.
 
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