Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 845 · 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. 2.103 × 104 =
3. 3.115 × 89 =
4. 4.13 × 12 =
5. 5.8 × 8 =
6. 6.85 × 91 =
7. 7.115 × 112 =
8. 8.89 × 93 =
9. 9.9 × 7 =
10. 10.8 × 7 =
11. 11.9 × 8 =
12. 12.1039 × 1020 =
13. 13.13 × 12 =
14. 14.98 × 95 =
15. 15.109 × 98 =
16. 16.7 × 9 =
17. 17.90 × 85 =
18. 18.1022 × 1003 =
19. 19.1021 × 1028 =
20. 20.1032 × 973 =
21. 21.107 × 85 =
22. 22.12 × 14 =
23. 23.97 × 96 =
24. 24.11 × 8 =
25. 25.12 × 14 =
26. 26.107 × 111 =
27. 27.1032 × 1007 =
28. 28.102 × 103 =
29. 29.105 × 89 =
30. 30.11 × 12 =
31. 31.993 × 980 =
32. 32.9 × 7 =
33. 33.14 × 11 =
34. 34.6 × 8 =
35. 35.87 × 87 =
36. 36.103 × 85 =
37. 37.1023 × 1002 =
38. 38.103 × 114 =
39. 39.11 × 8 =
40. 40.12 × 12 =

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