Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 819 · 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. 1.115 × 112 =
2. 2.86 × 99 =
3. 3.9 × 7 =
4. 4.89 × 89 =
5. 5.93 × 89 =
6. 6.11 × 14 =
7. 7.89 × 89 =
8. 8.98 × 94 =
9. 9.9 × 7 =
10. 10.990 × 974 =
11. 11.94 × 95 =
12. 12.11 × 11 =
13. 13.99 × 92 =
14. 14.12 × 8 =
15. 15.1023 × 1002 =
16. 16.101 × 108 =
17. 17.109 × 92 =
18. 18.101 × 114 =
19. 19.1021 × 1024 =
20. 20.110 × 110 =
21. 21.9 × 6 =
22. 22.91 × 86 =
23. 23.87 × 97 =
24. 24.11 × 9 =
25. 25.106 × 113 =
26. 26.974 × 987 =
27. 27.993 × 970 =
28. 28.114 × 101 =
29. 29.114 × 107 =
30. 30.109 × 110 =
31. 31.11 × 14 =
32. 32.1027 × 1016 =
33. 33.12 × 6 =
34. 34.963 × 989 =
35. 35.105 × 109 =
36. 36.89 × 90 =
37. 37.92 × 96 =
38. 38.6 × 6 =
39. 39.8 × 7 =
40. 40.8 × 7 =

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