Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 808 · 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. 1.108 × 93 =
2. 2.113 × 114 =
3. 3.8 × 8 =
4. 4.115 × 112 =
5. 5.7 × 9 =
6. 6.984 × 967 =
7. 7.1005 × 1007 =
8. 8.1033 × 1030 =
9. 9.98 × 97 =
10. 10.1005 × 995 =
11. 11.14 × 11 =
12. 12.7 × 7 =
13. 13.988 × 976 =
14. 14.113 × 115 =
15. 15.97 × 97 =
16. 16.12 × 9 =
17. 17.11 × 8 =
18. 18.86 × 87 =
19. 19.13 × 12 =
20. 20.7 × 9 =
21. 21.1038 × 982 =
22. 22.969 × 962 =
23. 23.104 × 110 =
24. 24.106 × 114 =
25. 25.87 × 85 =
26. 26.89 × 86 =
27. 27.991 × 969 =
28. 28.964 × 994 =
29. 29.94 × 90 =
30. 30.102 × 105 =
31. 31.1002 × 999 =
32. 32.1007 × 977 =
33. 33.1004 × 1040 =
34. 34.114 × 97 =
35. 35.13 × 9 =
36. 36.98 × 86 =
37. 37.93 × 89 =
38. 38.91 × 88 =
39. 39.98 × 97 =
40. 40.97 × 92 =

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