Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 913 · 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. 1.113 × 102 =
2. 2.107 × 99 =
3. 3.6 × 6 =
4. 4.85 × 86 =
5. 5.960 × 983 =
6. 6.99 × 92 =
7. 7.8 × 8 =
8. 8.8 × 7 =
9. 9.11 × 6 =
10. 10.11 × 11 =
11. 11.110 × 114 =
12. 12.113 × 106 =
13. 13.92 × 97 =
14. 14.93 × 96 =
15. 15.105 × 111 =
16. 16.103 × 113 =
17. 17.103 × 92 =
18. 18.9 × 6 =
19. 19.1034 × 1027 =
20. 20.962 × 992 =
21. 21.1010 × 996 =
22. 22.981 × 989 =
23. 23.109 × 96 =
24. 24.98 × 98 =
25. 25.108 × 106 =
26. 26.11 × 9 =
27. 27.87 × 87 =
28. 28.13 × 13 =
29. 29.1022 × 1038 =
30. 30.1020 × 991 =
31. 31.96 × 99 =
32. 32.8 × 8 =
33. 33.114 × 89 =
34. 34.103 × 105 =
35. 35.7 × 9 =
36. 36.93 × 99 =
37. 37.6 × 6 =
38. 38.1022 × 1035 =
39. 39.86 × 93 =
40. 40.1021 × 1027 =

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