Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 502 · 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. 1.104 × 115 =
2. 2.1003 × 970 =
3. 3.13 × 13 =
4. 4.106 × 102 =
5. 5.103 × 92 =
6. 6.8 × 7 =
7. 7.107 × 88 =
8. 8.965 × 984 =
9. 9.1002 × 1010 =
10. 10.108 × 112 =
11. 11.85 × 90 =
12. 12.110 × 99 =
13. 13.115 × 113 =
14. 14.9 × 6 =
15. 15.6 × 7 =
16. 16.1023 × 986 =
17. 17.97 × 86 =
18. 18.13 × 7 =
19. 19.93 × 98 =
20. 20.977 × 990 =
21. 21.86 × 92 =
22. 22.7 × 7 =
23. 23.114 × 112 =
24. 24.87 × 86 =
25. 25.106 × 93 =
26. 26.7 × 9 =
27. 27.92 × 88 =
28. 28.11 × 11 =
29. 29.109 × 96 =
30. 30.95 × 93 =
31. 31.12 × 8 =
32. 32.86 × 99 =
33. 33.87 × 89 =
34. 34.95 × 91 =
35. 35.95 × 91 =
36. 36.103 × 98 =
37. 37.96 × 88 =
38. 38.974 × 969 =
39. 39.14 × 8 =
40. 40.108 × 105 =

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