Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 371 · 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. 1.1007 × 1025 =
2. 2.111 × 87 =
3. 3.8 × 6 =
4. 4.14 × 6 =
5. 5.970 × 981 =
6. 6.91 × 85 =
7. 7.110 × 94 =
8. 8.11 × 12 =
9. 9.102 × 99 =
10. 10.91 × 89 =
11. 11.12 × 11 =
12. 12.1002 × 995 =
13. 13.991 × 993 =
14. 14.9 × 8 =
15. 15.87 × 97 =
16. 16.102 × 112 =
17. 17.103 × 87 =
18. 18.93 × 99 =
19. 19.97 × 88 =
20. 20.110 × 108 =
21. 21.102 × 108 =
22. 22.12 × 13 =
23. 23.91 × 97 =
24. 24.86 × 90 =
25. 25.11 × 9 =
26. 26.6 × 6 =
27. 27.113 × 96 =
28. 28.7 × 9 =
29. 29.1037 × 1018 =
30. 30.93 × 86 =
31. 31.1025 × 1013 =
32. 32.967 × 981 =
33. 33.110 × 111 =
34. 34.106 × 104 =
35. 35.9 × 9 =
36. 36.96 × 90 =
37. 37.11 × 14 =
38. 38.13 × 13 =
39. 39.101 × 104 =
40. 40.1033 × 1004 =

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