01. MULTIPLY FROM LEFT

SUTRA (Algorithm)

Multiply From LEFT; Add
Take Care of Place-Values

Demonstration (1): 23 x 4 = ?

First multiply 2 by 4, get 8;
8 is actually 80 as 2 stands for 20.

Now multiply 3 by 4, get 12.
Add 80 & 12, get 92

x_from_left_1_300x110

So, in one line, 23 x 4 = 92.

Demonstration (2): 213 x 4 = ?

First multiply 21 by 4, get 84
which is really 840;

Now multiply 3 by 4, get 12.
Add 840 & 12, get 852.

So, in one line, 213 x 4 = 852.

Verify The following Examples:

  1. 23 x 3 >> 60, 9 >> 69
  2. 23 x 7 >> 140, 21 >> 161
  3. 28 x 9 >> 180, 72 >> 252
  4. 63 x 6 >> 360, 18 >> 378
  5. 123 x 7 >> 840, 21 >> 861
  6. 254 x 4 >> 1000, 16 >> 1016
  7. 352 x 3 >> 1050, 6 >> 1056
  8. 97 x 12 >> 1080, 84 >> 1164
  9. 78 x 6 >> 420, 48 >> 468
  10. 203 x 8 >> 1600, 24 >> 1624
  11. 237 x 4 >> 800, 120, 28 >> 948
  12. 526 x 9 >> 4500, 180, 54 >> 4734
  13. 678 x 7 >> 4200, 490, 56 >> 4746
  14. 807 x 15 >> 12000, 105 >> 12105
  15. 487 x 6 >> 2400, 480, 42 >> 2922