Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 297 · 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. 1.85 × 92 =
2. 2.115 × 102 =
3. 3.92 × 98 =
4. 4.94 × 96 =
5. 5.115 × 91 =
6. 6.113 × 104 =
7. 7.115 × 114 =
8. 8.1010 × 1007 =
9. 9.97 × 86 =
10. 10.113 × 95 =
11. 11.12 × 6 =
12. 12.12 × 13 =
13. 13.1027 × 984 =
14. 14.8 × 9 =
15. 15.6 × 6 =
16. 16.11 × 8 =
17. 17.113 × 90 =
18. 18.14 × 11 =
19. 19.1031 × 967 =
20. 20.102 × 93 =
21. 21.12 × 14 =
22. 22.111 × 101 =
23. 23.1017 × 1036 =
24. 24.1018 × 978 =
25. 25.104 × 103 =
26. 26.114 × 112 =
27. 27.103 × 87 =
28. 28.12 × 12 =
29. 29.105 × 89 =
30. 30.115 × 91 =
31. 31.86 × 88 =
32. 32.1023 × 1002 =
33. 33.111 × 113 =
34. 34.7 × 6 =
35. 35.89 × 98 =
36. 36.95 × 91 =
37. 37.113 × 106 =
38. 38.99 × 88 =
39. 39.108 × 105 =
40. 40.1022 × 1032 =

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