Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 885 · 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. 1.1033 × 1012 =
2. 2.1019 × 969 =
3. 3.106 × 93 =
4. 4.12 × 7 =
5. 5.14 × 14 =
6. 6.115 × 105 =
7. 7.11 × 8 =
8. 8.109 × 99 =
9. 9.13 × 14 =
10. 10.115 × 87 =
11. 11.85 × 98 =
12. 12.14 × 6 =
13. 13.104 × 94 =
14. 14.7 × 6 =
15. 15.85 × 96 =
16. 16.111 × 102 =
17. 17.98 × 96 =
18. 18.112 × 107 =
19. 19.105 × 113 =
20. 20.112 × 97 =
21. 21.108 × 90 =
22. 22.8 × 9 =
23. 23.11 × 7 =
24. 24.9 × 8 =
25. 25.88 × 93 =
26. 26.107 × 104 =
27. 27.1031 × 1029 =
28. 28.1017 × 1006 =
29. 29.101 × 94 =
30. 30.9 × 6 =
31. 31.97 × 96 =
32. 32.980 × 968 =
33. 33.1026 × 1030 =
34. 34.1037 × 1009 =
35. 35.11 × 14 =
36. 36.11 × 11 =
37. 37.8 × 6 =
38. 38.87 × 86 =
39. 39.11 × 13 =
40. 40.12 × 7 =

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