Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 215 · 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. 1.13 × 13 =
2. 2.113 × 108 =
3. 3.104 × 99 =
4. 4.980 × 972 =
5. 5.111 × 113 =
6. 6.87 × 96 =
7. 7.96 × 86 =
8. 8.14 × 7 =
9. 9.7 × 8 =
10. 10.113 × 114 =
11. 11.103 × 101 =
12. 12.101 × 89 =
13. 13.6 × 7 =
14. 14.972 × 970 =
15. 15.113 × 112 =
16. 16.12 × 8 =
17. 17.101 × 92 =
18. 18.988 × 997 =
19. 19.97 × 98 =
20. 20.13 × 14 =
21. 21.99 × 86 =
22. 22.1004 × 960 =
23. 23.115 × 87 =
24. 24.1024 × 1038 =
25. 25.1027 × 1022 =
26. 26.13 × 14 =
27. 27.85 × 99 =
28. 28.103 × 101 =
29. 29.114 × 98 =
30. 30.97 × 97 =
31. 31.11 × 11 =
32. 32.98 × 99 =
33. 33.12 × 9 =
34. 34.103 × 101 =
35. 35.91 × 89 =
36. 36.8 × 7 =
37. 37.7 × 6 =
38. 38.1028 × 1010 =
39. 39.13 × 12 =
40. 40.98 × 99 =

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