Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 509 · 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. 1.98 × 89 =
2. 2.99 × 89 =
3. 3.87 × 96 =
4. 4.89 × 98 =
5. 5.89 × 98 =
6. 6.88 × 97 =
7. 7.973 × 962 =
8. 8.99 × 85 =
9. 9.6 × 9 =
10. 10.113 × 87 =
11. 11.1039 × 1037 =
12. 12.105 × 86 =
13. 13.1010 × 995 =
14. 14.107 × 94 =
15. 15.115 × 105 =
16. 16.86 × 98 =
17. 17.101 × 88 =
18. 18.87 × 89 =
19. 19.1003 × 992 =
20. 20.1026 × 1010 =
21. 21.14 × 9 =
22. 22.98 × 97 =
23. 23.7 × 9 =
24. 24.1001 × 965 =
25. 25.13 × 9 =
26. 26.87 × 99 =
27. 27.7 × 6 =
28. 28.92 × 98 =
29. 29.11 × 11 =
30. 30.12 × 13 =
31. 31.11 × 6 =
32. 32.6 × 6 =
33. 33.105 × 90 =
34. 34.976 × 978 =
35. 35.104 × 108 =
36. 36.988 × 999 =
37. 37.9 × 6 =
38. 38.104 × 98 =
39. 39.103 × 95 =
40. 40.12 × 6 =

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