Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 46 · 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 × 99 =
2. 2.96 × 96 =
3. 3.108 × 115 =
4. 4.90 × 86 =
5. 5.14 × 11 =
6. 6.106 × 104 =
7. 7.98 × 86 =
8. 8.87 × 88 =
9. 9.87 × 85 =
10. 10.112 × 104 =
11. 11.96 × 97 =
12. 12.9 × 9 =
13. 13.88 × 92 =
14. 14.13 × 9 =
15. 15.87 × 92 =
16. 16.95 × 93 =
17. 17.96 × 90 =
18. 18.96 × 94 =
19. 19.96 × 87 =
20. 20.102 × 114 =
21. 21.88 × 93 =
22. 22.11 × 13 =
23. 23.115 × 104 =
24. 24.961 × 988 =
25. 25.1004 × 1008 =
26. 26.95 × 91 =
27. 27.90 × 93 =
28. 28.1025 × 980 =
29. 29.89 × 98 =
30. 30.94 × 95 =
31. 31.1026 × 998 =
32. 32.9 × 8 =
33. 33.86 × 92 =
34. 34.14 × 8 =
35. 35.96 × 88 =
36. 36.986 × 984 =
37. 37.107 × 97 =
38. 38.12 × 13 =
39. 39.13 × 7 =
40. 40.90 × 98 =

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