Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 322 · 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. 1.1005 × 1019 =
2. 2.114 × 114 =
3. 3.7 × 7 =
4. 4.12 × 14 =
5. 5.105 × 107 =
6. 6.7 × 8 =
7. 7.106 × 92 =
8. 8.110 × 96 =
9. 9.6 × 7 =
10. 10.97 × 89 =
11. 11.96 × 87 =
12. 12.110 × 106 =
13. 13.106 × 108 =
14. 14.101 × 114 =
15. 15.6 × 7 =
16. 16.98 × 92 =
17. 17.89 × 91 =
18. 18.86 × 97 =
19. 19.97 × 98 =
20. 20.12 × 7 =
21. 21.90 × 92 =
22. 22.1031 × 995 =
23. 23.88 × 95 =
24. 24.92 × 97 =
25. 25.13 × 13 =
26. 26.85 × 98 =
27. 27.85 × 92 =
28. 28.105 × 109 =
29. 29.8 × 8 =
30. 30.105 × 87 =
31. 31.973 × 961 =
32. 32.9 × 9 =
33. 33.97 × 98 =
34. 34.1026 × 977 =
35. 35.107 × 114 =
36. 36.1010 × 1013 =
37. 37.981 × 968 =
38. 38.980 × 992 =
39. 39.968 × 968 =
40. 40.98 × 97 =

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