Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 367 · 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 × 86 =
2. 2.98 × 89 =
3. 3.104 × 106 =
4. 4.103 × 115 =
5. 5.86 × 96 =
6. 6.1019 × 1031 =
7. 7.978 × 993 =
8. 8.96 × 91 =
9. 9.92 × 92 =
10. 10.9 × 9 =
11. 11.94 × 95 =
12. 12.992 × 983 =
13. 13.1020 × 1011 =
14. 14.14 × 14 =
15. 15.110 × 98 =
16. 16.986 × 978 =
17. 17.6 × 9 =
18. 18.110 × 97 =
19. 19.101 × 102 =
20. 20.962 × 991 =
21. 21.990 × 999 =
22. 22.12 × 13 =
23. 23.97 × 91 =
24. 24.95 × 85 =
25. 25.11 × 11 =
26. 26.112 × 111 =
27. 27.110 × 109 =
28. 28.983 × 965 =
29. 29.95 × 89 =
30. 30.7 × 8 =
31. 31.89 × 94 =
32. 32.9 × 8 =
33. 33.91 × 88 =
34. 34.107 × 94 =
35. 35.11 × 6 =
36. 36.1003 × 1039 =
37. 37.8 × 7 =
38. 38.1021 × 994 =
39. 39.97 × 89 =
40. 40.96 × 97 =

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