Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 794 · 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. 1.984 × 969 =
2. 2.1037 × 1025 =
3. 3.113 × 108 =
4. 4.11 × 11 =
5. 5.104 × 87 =
6. 6.89 × 87 =
7. 7.7 × 9 =
8. 8.13 × 9 =
9. 9.111 × 93 =
10. 10.12 × 8 =
11. 11.101 × 103 =
12. 12.111 × 95 =
13. 13.90 × 97 =
14. 14.115 × 112 =
15. 15.8 × 9 =
16. 16.93 × 93 =
17. 17.1013 × 995 =
18. 18.107 × 97 =
19. 19.91 × 93 =
20. 20.113 × 97 =
21. 21.1008 × 1010 =
22. 22.985 × 993 =
23. 23.12 × 14 =
24. 24.14 × 12 =
25. 25.114 × 101 =
26. 26.85 × 96 =
27. 27.102 × 95 =
28. 28.97 × 86 =
29. 29.103 × 112 =
30. 30.13 × 11 =
31. 31.89 × 91 =
32. 32.88 × 94 =
33. 33.14 × 8 =
34. 34.1029 × 1019 =
35. 35.11 × 12 =
36. 36.14 × 12 =
37. 37.11 × 14 =
38. 38.115 × 110 =
39. 39.7 × 6 =
40. 40.97 × 99 =

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