Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 298 · 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. 1.99 × 99 =
2. 2.1009 × 981 =
3. 3.95 × 86 =
4. 4.108 × 90 =
5. 5.12 × 14 =
6. 6.95 × 85 =
7. 7.9 × 7 =
8. 8.9 × 6 =
9. 9.1028 × 972 =
10. 10.108 × 91 =
11. 11.1017 × 990 =
12. 12.101 × 86 =
13. 13.11 × 11 =
14. 14.13 × 9 =
15. 15.98 × 89 =
16. 16.101 × 101 =
17. 17.1031 × 988 =
18. 18.8 × 6 =
19. 19.92 × 94 =
20. 20.111 × 88 =
21. 21.93 × 98 =
22. 22.87 × 96 =
23. 23.12 × 12 =
24. 24.990 × 976 =
25. 25.104 × 98 =
26. 26.972 × 969 =
27. 27.104 × 108 =
28. 28.103 × 86 =
29. 29.13 × 13 =
30. 30.9 × 8 =
31. 31.98 × 92 =
32. 32.982 × 978 =
33. 33.93 × 97 =
34. 34.91 × 92 =
35. 35.1022 × 1030 =
36. 36.114 × 102 =
37. 37.8 × 6 =
38. 38.114 × 89 =
39. 39.14 × 9 =
40. 40.11 × 7 =

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