Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 651 · 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. 1.93 × 92 =
2. 2.115 × 102 =
3. 3.97 × 95 =
4. 4.88 × 94 =
5. 5.113 × 99 =
6. 6.1005 × 989 =
7. 7.8 × 9 =
8. 8.1033 × 1033 =
9. 9.9 × 8 =
10. 10.11 × 11 =
11. 11.13 × 12 =
12. 12.107 × 98 =
13. 13.106 × 85 =
14. 14.113 × 103 =
15. 15.1034 × 981 =
16. 16.1014 × 1015 =
17. 17.111 × 103 =
18. 18.1012 × 1029 =
19. 19.96 × 90 =
20. 20.97 × 89 =
21. 21.8 × 9 =
22. 22.990 × 973 =
23. 23.90 × 87 =
24. 24.102 × 97 =
25. 25.106 × 102 =
26. 26.115 × 96 =
27. 27.86 × 87 =
28. 28.14 × 13 =
29. 29.968 × 981 =
30. 30.9 × 6 =
31. 31.11 × 11 =
32. 32.87 × 92 =
33. 33.101 × 108 =
34. 34.104 × 105 =
35. 35.97 × 88 =
36. 36.103 × 99 =
37. 37.113 × 95 =
38. 38.8 × 6 =
39. 39.9 × 8 =
40. 40.6 × 9 =

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