Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 289 · 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. 1.109 × 108 =
2. 2.973 × 979 =
3. 3.112 × 95 =
4. 4.115 × 97 =
5. 5.13 × 11 =
6. 6.115 × 104 =
7. 7.998 × 990 =
8. 8.99 × 97 =
9. 9.7 × 9 =
10. 10.86 × 96 =
11. 11.97 × 93 =
12. 12.102 × 99 =
13. 13.1026 × 1039 =
14. 14.110 × 98 =
15. 15.86 × 97 =
16. 16.111 × 113 =
17. 17.1010 × 1027 =
18. 18.9 × 6 =
19. 19.1023 × 997 =
20. 20.89 × 91 =
21. 21.1011 × 966 =
22. 22.13 × 9 =
23. 23.14 × 8 =
24. 24.113 × 110 =
25. 25.107 × 103 =
26. 26.107 × 114 =
27. 27.104 × 103 =
28. 28.8 × 9 =
29. 29.102 × 98 =
30. 30.102 × 108 =
31. 31.114 × 113 =
32. 32.88 × 93 =
33. 33.103 × 102 =
34. 34.93 × 89 =
35. 35.85 × 85 =
36. 36.11 × 7 =
37. 37.96 × 89 =
38. 38.1019 × 1010 =
39. 39.89 × 89 =
40. 40.115 × 98 =

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