Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 523 · 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. 1.103 × 105 =
2. 2.9 × 7 =
3. 3.101 × 108 =
4. 4.96 × 90 =
5. 5.115 × 106 =
6. 6.9 × 6 =
7. 7.111 × 106 =
8. 8.93 × 90 =
9. 9.98 × 99 =
10. 10.13 × 9 =
11. 11.96 × 94 =
12. 12.109 × 108 =
13. 13.1020 × 1012 =
14. 14.12 × 6 =
15. 15.91 × 87 =
16. 16.983 × 984 =
17. 17.1001 × 970 =
18. 18.87 × 93 =
19. 19.1026 × 1021 =
20. 20.961 × 977 =
21. 21.90 × 99 =
22. 22.101 × 112 =
23. 23.996 × 990 =
24. 24.95 × 97 =
25. 25.86 × 99 =
26. 26.106 × 99 =
27. 27.99 × 89 =
28. 28.11 × 13 =
29. 29.104 × 92 =
30. 30.87 × 93 =
31. 31.12 × 11 =
32. 32.13 × 9 =
33. 33.962 × 997 =
34. 34.7 × 8 =
35. 35.7 × 9 =
36. 36.7 × 9 =
37. 37.98 × 86 =
38. 38.13 × 11 =
39. 39.107 × 109 =
40. 40.966 × 971 =

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