Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 23 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.113 × 103 =
2. 2.9 × 6 =
3. 3.105 × 102 =
4. 4.105 × 109 =
5. 5.99 × 97 =
6. 6.91 × 90 =
7. 7.97 × 88 =
8. 8.12 × 12 =
9. 9.7 × 9 =
10. 10.9 × 8 =
11. 11.110 × 113 =
12. 12.11 × 14 =
13. 13.9 × 9 =
14. 14.90 × 96 =
15. 15.13 × 13 =
16. 16.91 × 90 =
17. 17.11 × 12 =
18. 18.1035 × 964 =
19. 19.109 × 96 =
20. 20.109 × 115 =
21. 21.1031 × 1033 =
22. 22.109 × 106 =
23. 23.104 × 87 =
24. 24.11 × 12 =
25. 25.91 × 87 =
26. 26.98 × 99 =
27. 27.89 × 85 =
28. 28.9 × 6 =
29. 29.109 × 93 =
30. 30.105 × 114 =
31. 31.14 × 14 =
32. 32.91 × 94 =
33. 33.95 × 89 =
34. 34.107 × 110 =
35. 35.113 × 115 =
36. 36.115 × 92 =
37. 37.98 × 85 =
38. 38.106 × 104 =
39. 39.86 × 95 =
40. 40.102 × 106 =

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