Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 849 · 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. 1.99 × 93 =
2. 2.994 × 988 =
3. 3.981 × 989 =
4. 4.91 × 85 =
5. 5.114 × 109 =
6. 6.7 × 7 =
7. 7.12 × 9 =
8. 8.86 × 86 =
9. 9.1020 × 1004 =
10. 10.1027 × 1005 =
11. 11.960 × 971 =
12. 12.91 × 86 =
13. 13.9 × 6 =
14. 14.1001 × 1034 =
15. 15.974 × 983 =
16. 16.111 × 96 =
17. 17.113 × 95 =
18. 18.110 × 97 =
19. 19.8 × 8 =
20. 20.96 × 92 =
21. 21.86 × 99 =
22. 22.1005 × 1019 =
23. 23.88 × 98 =
24. 24.14 × 14 =
25. 25.13 × 11 =
26. 26.110 × 92 =
27. 27.8 × 7 =
28. 28.989 × 974 =
29. 29.90 × 89 =
30. 30.91 × 85 =
31. 31.101 × 106 =
32. 32.110 × 86 =
33. 33.7 × 7 =
34. 34.996 × 998 =
35. 35.90 × 97 =
36. 36.102 × 109 =
37. 37.89 × 90 =
38. 38.14 × 13 =
39. 39.97 × 86 =
40. 40.93 × 85 =

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