Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 916 · 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. 1.103 × 91 =
2. 2.13 × 11 =
3. 3.963 × 990 =
4. 4.114 × 104 =
5. 5.109 × 108 =
6. 6.1009 × 1014 =
7. 7.1017 × 991 =
8. 8.982 × 994 =
9. 9.95 × 94 =
10. 10.1035 × 966 =
11. 11.104 × 111 =
12. 12.981 × 982 =
13. 13.108 × 112 =
14. 14.1003 × 993 =
15. 15.11 × 7 =
16. 16.12 × 14 =
17. 17.1009 × 991 =
18. 18.96 × 93 =
19. 19.108 × 104 =
20. 20.113 × 90 =
21. 21.88 × 97 =
22. 22.13 × 14 =
23. 23.106 × 103 =
24. 24.9 × 6 =
25. 25.964 × 969 =
26. 26.982 × 976 =
27. 27.106 × 106 =
28. 28.11 × 11 =
29. 29.985 × 972 =
30. 30.11 × 9 =
31. 31.12 × 9 =
32. 32.12 × 13 =
33. 33.89 × 86 =
34. 34.13 × 14 =
35. 35.1022 × 1018 =
36. 36.89 × 96 =
37. 37.8 × 7 =
38. 38.97 × 99 =
39. 39.95 × 88 =
40. 40.103 × 86 =

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