Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 30 · 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. 1.980 × 993 =
2. 2.979 × 972 =
3. 3.1016 × 1025 =
4. 4.104 × 93 =
5. 5.984 × 973 =
6. 6.95 × 91 =
7. 7.12 × 8 =
8. 8.1009 × 996 =
9. 9.96 × 90 =
10. 10.108 × 112 =
11. 11.99 × 85 =
12. 12.999 × 997 =
13. 13.96 × 98 =
14. 14.11 × 11 =
15. 15.1038 × 999 =
16. 16.103 × 113 =
17. 17.114 × 95 =
18. 18.982 × 973 =
19. 19.88 × 89 =
20. 20.976 × 964 =
21. 21.6 × 9 =
22. 22.104 × 90 =
23. 23.1018 × 1032 =
24. 24.99 × 97 =
25. 25.11 × 6 =
26. 26.87 × 85 =
27. 27.109 × 97 =
28. 28.6 × 9 =
29. 29.12 × 6 =
30. 30.113 × 108 =
31. 31.7 × 6 =
32. 32.89 × 96 =
33. 33.88 × 87 =
34. 34.991 × 961 =
35. 35.115 × 107 =
36. 36.88 × 89 =
37. 37.976 × 982 =
38. 38.85 × 92 =
39. 39.9 × 6 =
40. 40.13 × 11 =

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