Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 390 · 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. 1.13 × 7 =
2. 2.973 × 979 =
3. 3.14 × 12 =
4. 4.990 × 994 =
5. 5.9 × 9 =
6. 6.966 × 972 =
7. 7.115 × 108 =
8. 8.1024 × 1014 =
9. 9.99 × 91 =
10. 10.95 × 99 =
11. 11.114 × 109 =
12. 12.98 × 95 =
13. 13.8 × 8 =
14. 14.1020 × 1001 =
15. 15.93 × 99 =
16. 16.12 × 11 =
17. 17.112 × 85 =
18. 18.12 × 13 =
19. 19.93 × 91 =
20. 20.98 × 86 =
21. 21.1036 × 970 =
22. 22.87 × 99 =
23. 23.90 × 98 =
24. 24.1033 × 961 =
25. 25.106 × 91 =
26. 26.13 × 11 =
27. 27.983 × 989 =
28. 28.7 × 7 =
29. 29.112 × 92 =
30. 30.6 × 6 =
31. 31.14 × 6 =
32. 32.97 × 92 =
33. 33.87 × 90 =
34. 34.86 × 95 =
35. 35.89 × 89 =
36. 36.86 × 94 =
37. 37.995 × 987 =
38. 38.102 × 87 =
39. 39.92 × 99 =
40. 40.1030 × 1027 =

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