Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 166 · 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. 1.91 × 92 =
2. 2.13 × 11 =
3. 3.103 × 92 =
4. 4.968 × 986 =
5. 5.115 × 85 =
6. 6.97 × 96 =
7. 7.111 × 103 =
8. 8.99 × 99 =
9. 9.101 × 108 =
10. 10.101 × 93 =
11. 11.12 × 9 =
12. 12.8 × 9 =
13. 13.6 × 6 =
14. 14.107 × 107 =
15. 15.107 × 90 =
16. 16.12 × 13 =
17. 17.114 × 105 =
18. 18.88 × 86 =
19. 19.960 × 971 =
20. 20.7 × 8 =
21. 21.7 × 7 =
22. 22.12 × 8 =
23. 23.104 × 104 =
24. 24.1015 × 998 =
25. 25.9 × 9 =
26. 26.93 × 85 =
27. 27.14 × 9 =
28. 28.106 × 86 =
29. 29.99 × 90 =
30. 30.110 × 111 =
31. 31.13 × 9 =
32. 32.101 × 89 =
33. 33.92 × 91 =
34. 34.12 × 13 =
35. 35.7 × 9 =
36. 36.994 × 992 =
37. 37.114 × 103 =
38. 38.92 × 96 =
39. 39.105 × 108 =
40. 40.1026 × 1018 =

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