Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 220 · 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. 1.1010 × 1037 =
2. 2.108 × 98 =
3. 3.113 × 90 =
4. 4.7 × 8 =
5. 5.109 × 85 =
6. 6.98 × 89 =
7. 7.108 × 90 =
8. 8.1039 × 997 =
9. 9.12 × 12 =
10. 10.99 × 99 =
11. 11.103 × 110 =
12. 12.988 × 995 =
13. 13.92 × 91 =
14. 14.96 × 98 =
15. 15.103 × 110 =
16. 16.980 × 991 =
17. 17.106 × 114 =
18. 18.102 × 90 =
19. 19.971 × 964 =
20. 20.91 × 99 =
21. 21.12 × 6 =
22. 22.96 × 96 =
23. 23.9 × 7 =
24. 24.14 × 11 =
25. 25.101 × 114 =
26. 26.992 × 971 =
27. 27.91 × 94 =
28. 28.107 × 101 =
29. 29.99 × 85 =
30. 30.1038 × 987 =
31. 31.102 × 102 =
32. 32.102 × 111 =
33. 33.112 × 105 =
34. 34.6 × 6 =
35. 35.103 × 101 =
36. 36.108 × 85 =
37. 37.14 × 12 =
38. 38.13 × 12 =
39. 39.98 × 90 =
40. 40.95 × 95 =

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