Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 394 · 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. 1.14 × 9 =
2. 2.101 × 86 =
3. 3.99 × 98 =
4. 4.1035 × 1019 =
5. 5.102 × 108 =
6. 6.8 × 6 =
7. 7.11 × 11 =
8. 8.103 × 89 =
9. 9.93 × 86 =
10. 10.8 × 9 =
11. 11.8 × 8 =
12. 12.108 × 85 =
13. 13.1018 × 1036 =
14. 14.87 × 99 =
15. 15.112 × 91 =
16. 16.98 × 89 =
17. 17.109 × 90 =
18. 18.97 × 85 =
19. 19.89 × 95 =
20. 20.111 × 106 =
21. 21.11 × 9 =
22. 22.109 × 109 =
23. 23.90 × 87 =
24. 24.90 × 94 =
25. 25.6 × 8 =
26. 26.90 × 96 =
27. 27.1023 × 1034 =
28. 28.110 × 103 =
29. 29.104 × 113 =
30. 30.993 × 987 =
31. 31.92 × 95 =
32. 32.95 × 97 =
33. 33.102 × 111 =
34. 34.103 × 115 =
35. 35.6 × 9 =
36. 36.12 × 12 =
37. 37.86 × 87 =
38. 38.105 × 91 =
39. 39.1023 × 1029 =
40. 40.8 × 8 =

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