Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 423 · 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. 1.989 × 983 =
2. 2.106 × 114 =
3. 3.101 × 109 =
4. 4.1013 × 1019 =
5. 5.13 × 12 =
6. 6.1015 × 975 =
7. 7.976 × 994 =
8. 8.110 × 115 =
9. 9.992 × 990 =
10. 10.89 × 85 =
11. 11.1035 × 1016 =
12. 12.115 × 114 =
13. 13.1004 × 1010 =
14. 14.97 × 96 =
15. 15.110 × 101 =
16. 16.115 × 105 =
17. 17.13 × 6 =
18. 18.114 × 92 =
19. 19.14 × 9 =
20. 20.86 × 99 =
21. 21.9 × 6 =
22. 22.13 × 8 =
23. 23.94 × 89 =
24. 24.89 × 90 =
25. 25.12 × 12 =
26. 26.102 × 93 =
27. 27.14 × 11 =
28. 28.1023 × 1002 =
29. 29.14 × 14 =
30. 30.113 × 85 =
31. 31.1005 × 971 =
32. 32.11 × 11 =
33. 33.1028 × 1008 =
34. 34.111 × 107 =
35. 35.99 × 96 =
36. 36.12 × 9 =
37. 37.94 × 89 =
38. 38.12 × 14 =
39. 39.90 × 90 =
40. 40.980 × 992 =

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