Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 811 · 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. 1.101 × 98 =
2. 2.104 × 102 =
3. 3.97 × 85 =
4. 4.86 × 93 =
5. 5.88 × 99 =
6. 6.103 × 106 =
7. 7.975 × 968 =
8. 8.98 × 99 =
9. 9.89 × 87 =
10. 10.114 × 114 =
11. 11.101 × 110 =
12. 12.88 × 86 =
13. 13.1035 × 1008 =
14. 14.975 × 976 =
15. 15.11 × 9 =
16. 16.14 × 14 =
17. 17.1001 × 1023 =
18. 18.12 × 14 =
19. 19.90 × 86 =
20. 20.103 × 85 =
21. 21.14 × 11 =
22. 22.104 × 99 =
23. 23.87 × 85 =
24. 24.96 × 91 =
25. 25.111 × 105 =
26. 26.104 × 91 =
27. 27.1009 × 1039 =
28. 28.12 × 14 =
29. 29.13 × 12 =
30. 30.13 × 12 =
31. 31.98 × 94 =
32. 32.11 × 12 =
33. 33.1016 × 984 =
34. 34.101 × 89 =
35. 35.14 × 11 =
36. 36.109 × 92 =
37. 37.106 × 99 =
38. 38.98 × 96 =
39. 39.990 × 982 =
40. 40.1020 × 999 =

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