Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 194 · 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. 1.108 × 104 =
2. 2.114 × 99 =
3. 3.1002 × 1009 =
4. 4.91 × 89 =
5. 5.90 × 92 =
6. 6.96 × 92 =
7. 7.13 × 14 =
8. 8.105 × 102 =
9. 9.93 × 93 =
10. 10.114 × 112 =
11. 11.11 × 12 =
12. 12.9 × 9 =
13. 13.106 × 112 =
14. 14.11 × 8 =
15. 15.87 × 89 =
16. 16.85 × 99 =
17. 17.1016 × 1007 =
18. 18.108 × 114 =
19. 19.992 × 986 =
20. 20.114 × 108 =
21. 21.112 × 107 =
22. 22.13 × 12 =
23. 23.7 × 8 =
24. 24.103 × 110 =
25. 25.103 × 104 =
26. 26.978 × 968 =
27. 27.12 × 14 =
28. 28.98 × 96 =
29. 29.114 × 99 =
30. 30.91 × 90 =
31. 31.7 × 9 =
32. 32.1038 × 1028 =
33. 33.12 × 8 =
34. 34.1023 × 1020 =
35. 35.107 × 104 =
36. 36.89 × 99 =
37. 37.86 × 92 =
38. 38.12 × 11 =
39. 39.14 × 14 =
40. 40.114 × 91 =

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