Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 837 · 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. 1.7 × 9 =
2. 2.101 × 111 =
3. 3.13 × 9 =
4. 4.1029 × 986 =
5. 5.113 × 91 =
6. 6.96 × 90 =
7. 7.87 × 89 =
8. 8.110 × 86 =
9. 9.95 × 85 =
10. 10.102 × 87 =
11. 11.110 × 106 =
12. 12.94 × 87 =
13. 13.1010 × 991 =
14. 14.89 × 90 =
15. 15.103 × 109 =
16. 16.9 × 9 =
17. 17.8 × 8 =
18. 18.8 × 7 =
19. 19.966 × 997 =
20. 20.90 × 89 =
21. 21.114 × 102 =
22. 22.1036 × 993 =
23. 23.106 × 91 =
24. 24.97 × 85 =
25. 25.1007 × 1027 =
26. 26.107 × 98 =
27. 27.1033 × 1011 =
28. 28.14 × 9 =
29. 29.11 × 11 =
30. 30.102 × 105 =
31. 31.115 × 111 =
32. 32.86 × 87 =
33. 33.11 × 13 =
34. 34.1003 × 976 =
35. 35.1014 × 967 =
36. 36.971 × 998 =
37. 37.102 × 113 =
38. 38.1033 × 1011 =
39. 39.115 × 101 =
40. 40.113 × 89 =

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