Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 641 · 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. 1.87 × 89 =
2. 2.104 × 111 =
3. 3.91 × 97 =
4. 4.91 × 97 =
5. 5.1006 × 990 =
6. 6.109 × 87 =
7. 7.1018 × 984 =
8. 8.11 × 13 =
9. 9.115 × 86 =
10. 10.98 × 99 =
11. 11.1034 × 962 =
12. 12.1008 × 1008 =
13. 13.95 × 99 =
14. 14.11 × 8 =
15. 15.8 × 6 =
16. 16.87 × 85 =
17. 17.978 × 995 =
18. 18.91 × 98 =
19. 19.92 × 99 =
20. 20.9 × 7 =
21. 21.101 × 102 =
22. 22.989 × 964 =
23. 23.90 × 87 =
24. 24.97 × 96 =
25. 25.103 × 89 =
26. 26.89 × 96 =
27. 27.996 × 963 =
28. 28.96 × 91 =
29. 29.12 × 11 =
30. 30.113 × 90 =
31. 31.1010 × 1022 =
32. 32.13 × 14 =
33. 33.12 × 8 =
34. 34.7 × 7 =
35. 35.7 × 7 =
36. 36.7 × 7 =
37. 37.94 × 86 =
38. 38.96 × 90 =
39. 39.101 × 98 =
40. 40.8 × 8 =

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