Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 139 · 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. 1.91 × 92 =
2. 2.92 × 97 =
3. 3.99 × 87 =
4. 4.7 × 8 =
5. 5.112 × 99 =
6. 6.114 × 89 =
7. 7.13 × 14 =
8. 8.8 × 8 =
9. 9.13 × 11 =
10. 10.99 × 85 =
11. 11.6 × 6 =
12. 12.85 × 98 =
13. 13.92 × 87 =
14. 14.7 × 9 =
15. 15.993 × 983 =
16. 16.95 × 91 =
17. 17.12 × 14 =
18. 18.95 × 89 =
19. 19.87 × 94 =
20. 20.86 × 96 =
21. 21.12 × 9 =
22. 22.1004 × 983 =
23. 23.1015 × 1031 =
24. 24.960 × 969 =
25. 25.11 × 8 =
26. 26.108 × 108 =
27. 27.113 × 103 =
28. 28.96 × 93 =
29. 29.1011 × 1034 =
30. 30.992 × 962 =
31. 31.13 × 9 =
32. 32.1002 × 1017 =
33. 33.107 × 114 =
34. 34.110 × 99 =
35. 35.94 × 90 =
36. 36.103 × 93 =
37. 37.12 × 11 =
38. 38.11 × 12 =
39. 39.12 × 6 =
40. 40.11 × 11 =

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