Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 881 · 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. 1.1022 × 1037 =
2. 2.113 × 102 =
3. 3.113 × 93 =
4. 4.112 × 107 =
5. 5.104 × 96 =
6. 6.90 × 93 =
7. 7.113 × 94 =
8. 8.111 × 97 =
9. 9.101 × 112 =
10. 10.995 × 980 =
11. 11.14 × 14 =
12. 12.110 × 101 =
13. 13.86 × 93 =
14. 14.87 × 97 =
15. 15.978 × 960 =
16. 16.9 × 6 =
17. 17.12 × 7 =
18. 18.6 × 8 =
19. 19.108 × 112 =
20. 20.7 × 7 =
21. 21.91 × 95 =
22. 22.1014 × 1014 =
23. 23.8 × 6 =
24. 24.99 × 97 =
25. 25.98 × 99 =
26. 26.93 × 93 =
27. 27.113 × 101 =
28. 28.1036 × 1015 =
29. 29.110 × 90 =
30. 30.13 × 9 =
31. 31.109 × 89 =
32. 32.103 × 92 =
33. 33.103 × 104 =
34. 34.11 × 11 =
35. 35.101 × 115 =
36. 36.108 × 108 =
37. 37.99 × 92 =
38. 38.11 × 12 =
39. 39.1005 × 967 =
40. 40.87 × 96 =

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