Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 335 · 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. 1.92 × 91 =
2. 2.91 × 95 =
3. 3.108 × 87 =
4. 4.13 × 12 =
5. 5.85 × 94 =
6. 6.91 × 97 =
7. 7.1035 × 1020 =
8. 8.109 × 103 =
9. 9.980 × 975 =
10. 10.1036 × 1037 =
11. 11.112 × 110 =
12. 12.96 × 87 =
13. 13.1007 × 1021 =
14. 14.103 × 107 =
15. 15.1009 × 1007 =
16. 16.13 × 13 =
17. 17.973 × 982 =
18. 18.1027 × 1036 =
19. 19.12 × 11 =
20. 20.93 × 87 =
21. 21.109 × 106 =
22. 22.13 × 7 =
23. 23.14 × 6 =
24. 24.960 × 999 =
25. 25.6 × 7 =
26. 26.108 × 115 =
27. 27.96 × 99 =
28. 28.86 × 91 =
29. 29.11 × 11 =
30. 30.109 × 109 =
31. 31.101 × 95 =
32. 32.1015 × 987 =
33. 33.111 × 86 =
34. 34.9 × 9 =
35. 35.8 × 7 =
36. 36.13 × 6 =
37. 37.103 × 111 =
38. 38.93 × 85 =
39. 39.108 × 108 =
40. 40.6 × 7 =

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