Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 471 · 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. 1.93 × 91 =
2. 2.110 × 114 =
3. 3.85 × 99 =
4. 4.105 × 104 =
5. 5.107 × 107 =
6. 6.99 × 93 =
7. 7.106 × 87 =
8. 8.6 × 8 =
9. 9.976 × 972 =
10. 10.103 × 107 =
11. 11.7 × 7 =
12. 12.1037 × 1021 =
13. 13.101 × 102 =
14. 14.9 × 9 =
15. 15.106 × 108 =
16. 16.11 × 12 =
17. 17.999 × 963 =
18. 18.99 × 85 =
19. 19.106 × 94 =
20. 20.86 × 88 =
21. 21.103 × 111 =
22. 22.990 × 960 =
23. 23.95 × 88 =
24. 24.103 × 101 =
25. 25.1033 × 980 =
26. 26.1004 × 977 =
27. 27.101 × 107 =
28. 28.101 × 115 =
29. 29.93 × 87 =
30. 30.11 × 9 =
31. 31.967 × 969 =
32. 32.6 × 9 =
33. 33.95 × 99 =
34. 34.91 × 86 =
35. 35.11 × 12 =
36. 36.996 × 966 =
37. 37.90 × 86 =
38. 38.12 × 13 =
39. 39.115 × 114 =
40. 40.1030 × 1039 =

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