Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 511 · 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. 1.966 × 998 =
2. 2.13 × 12 =
3. 3.86 × 99 =
4. 4.93 × 91 =
5. 5.114 × 95 =
6. 6.111 × 112 =
7. 7.97 × 85 =
8. 8.13 × 9 =
9. 9.101 × 109 =
10. 10.108 × 98 =
11. 11.6 × 8 =
12. 12.115 × 107 =
13. 13.1016 × 1015 =
14. 14.1003 × 997 =
15. 15.9 × 6 =
16. 16.14 × 14 =
17. 17.12 × 14 =
18. 18.991 × 990 =
19. 19.90 × 92 =
20. 20.1030 × 1029 =
21. 21.96 × 87 =
22. 22.99 × 88 =
23. 23.7 × 8 =
24. 24.88 × 87 =
25. 25.94 × 91 =
26. 26.102 × 107 =
27. 27.93 × 87 =
28. 28.107 × 103 =
29. 29.7 × 6 =
30. 30.985 × 989 =
31. 31.14 × 9 =
32. 32.97 × 91 =
33. 33.1004 × 981 =
34. 34.91 × 98 =
35. 35.11 × 6 =
36. 36.978 × 985 =
37. 37.110 × 113 =
38. 38.105 × 95 =
39. 39.86 × 89 =
40. 40.103 × 110 =

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