Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 636 · 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. 1.107 × 98 =
2. 2.8 × 9 =
3. 3.92 × 94 =
4. 4.87 × 91 =
5. 5.1004 × 1012 =
6. 6.90 × 93 =
7. 7.109 × 92 =
8. 8.11 × 12 =
9. 9.103 × 115 =
10. 10.107 × 107 =
11. 11.9 × 8 =
12. 12.1034 × 1020 =
13. 13.14 × 11 =
14. 14.11 × 14 =
15. 15.11 × 8 =
16. 16.11 × 6 =
17. 17.94 × 95 =
18. 18.113 × 107 =
19. 19.11 × 11 =
20. 20.1040 × 994 =
21. 21.114 × 107 =
22. 22.109 × 85 =
23. 23.89 × 88 =
24. 24.113 × 112 =
25. 25.973 × 981 =
26. 26.11 × 6 =
27. 27.6 × 8 =
28. 28.92 × 99 =
29. 29.1001 × 1017 =
30. 30.12 × 9 =
31. 31.1022 × 1007 =
32. 32.980 × 965 =
33. 33.95 × 95 =
34. 34.12 × 7 =
35. 35.108 × 110 =
36. 36.1019 × 1013 =
37. 37.93 × 90 =
38. 38.1020 × 1027 =
39. 39.13 × 11 =
40. 40.12 × 9 =

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