Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 829 · 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. 1.90 × 97 =
2. 2.11 × 11 =
3. 3.6 × 8 =
4. 4.111 × 103 =
5. 5.970 × 965 =
6. 6.101 × 104 =
7. 7.86 × 93 =
8. 8.96 × 85 =
9. 9.7 × 8 =
10. 10.9 × 6 =
11. 11.6 × 9 =
12. 12.98 × 91 =
13. 13.11 × 11 =
14. 14.14 × 13 =
15. 15.14 × 7 =
16. 16.1002 × 1019 =
17. 17.91 × 94 =
18. 18.107 × 90 =
19. 19.109 × 111 =
20. 20.1019 × 1021 =
21. 21.13 × 9 =
22. 22.95 × 95 =
23. 23.105 × 107 =
24. 24.97 × 92 =
25. 25.7 × 9 =
26. 26.1006 × 1022 =
27. 27.92 × 90 =
28. 28.7 × 8 =
29. 29.107 × 108 =
30. 30.101 × 97 =
31. 31.105 × 97 =
32. 32.7 × 8 =
33. 33.13 × 11 =
34. 34.972 × 970 =
35. 35.94 × 90 =
36. 36.13 × 12 =
37. 37.11 × 13 =
38. 38.90 × 88 =
39. 39.95 × 94 =
40. 40.980 × 989 =

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