Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 413 · 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. 1.98 × 99 =
2. 2.90 × 90 =
3. 3.107 × 106 =
4. 4.7 × 8 =
5. 5.9 × 6 =
6. 6.91 × 94 =
7. 7.12 × 14 =
8. 8.107 × 109 =
9. 9.14 × 7 =
10. 10.6 × 8 =
11. 11.13 × 13 =
12. 12.102 × 102 =
13. 13.98 × 95 =
14. 14.14 × 7 =
15. 15.96 × 85 =
16. 16.106 × 96 =
17. 17.107 × 103 =
18. 18.1029 × 982 =
19. 19.11 × 13 =
20. 20.9 × 9 =
21. 21.95 × 85 =
22. 22.1032 × 1016 =
23. 23.6 × 7 =
24. 24.86 × 87 =
25. 25.99 × 96 =
26. 26.104 × 87 =
27. 27.11 × 9 =
28. 28.961 × 967 =
29. 29.8 × 9 =
30. 30.11 × 7 =
31. 31.107 × 109 =
32. 32.109 × 86 =
33. 33.106 × 113 =
34. 34.105 × 107 =
35. 35.1022 × 1035 =
36. 36.13 × 11 =
37. 37.86 × 89 =
38. 38.110 × 97 =
39. 39.105 × 114 =
40. 40.96 × 86 =

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