Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 755 · 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. 1.101 × 106 =
2. 2.107 × 93 =
3. 3.105 × 104 =
4. 4.110 × 108 =
5. 5.12 × 7 =
6. 6.112 × 98 =
7. 7.969 × 987 =
8. 8.102 × 113 =
9. 9.11 × 11 =
10. 10.95 × 92 =
11. 11.978 × 966 =
12. 12.111 × 115 =
13. 13.87 × 91 =
14. 14.90 × 98 =
15. 15.108 × 85 =
16. 16.12 × 12 =
17. 17.1036 × 996 =
18. 18.1034 × 1037 =
19. 19.105 × 107 =
20. 20.108 × 110 =
21. 21.9 × 7 =
22. 22.6 × 7 =
23. 23.90 × 85 =
24. 24.113 × 110 =
25. 25.103 × 105 =
26. 26.7 × 9 =
27. 27.97 × 88 =
28. 28.93 × 96 =
29. 29.11 × 11 =
30. 30.95 × 94 =
31. 31.104 × 86 =
32. 32.12 × 12 =
33. 33.93 × 98 =
34. 34.87 × 98 =
35. 35.109 × 115 =
36. 36.8 × 9 =
37. 37.14 × 12 =
38. 38.1010 × 1023 =
39. 39.108 × 115 =
40. 40.8 × 8 =

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