Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 84 · 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. 1.1034 × 972 =
2. 2.103 × 102 =
3. 3.6 × 9 =
4. 4.105 × 102 =
5. 5.6 × 9 =
6. 6.101 × 97 =
7. 7.98 × 87 =
8. 8.106 × 104 =
9. 9.14 × 6 =
10. 10.86 × 93 =
11. 11.102 × 103 =
12. 12.103 × 101 =
13. 13.95 × 95 =
14. 14.105 × 87 =
15. 15.97 × 87 =
16. 16.994 × 997 =
17. 17.101 × 91 =
18. 18.106 × 93 =
19. 19.99 × 91 =
20. 20.981 × 961 =
21. 21.89 × 93 =
22. 22.115 × 89 =
23. 23.1006 × 1038 =
24. 24.1015 × 1017 =
25. 25.99 × 90 =
26. 26.91 × 96 =
27. 27.14 × 13 =
28. 28.9 × 9 =
29. 29.1040 × 1020 =
30. 30.96 × 97 =
31. 31.1015 × 1013 =
32. 32.85 × 96 =
33. 33.13 × 14 =
34. 34.96 × 85 =
35. 35.91 × 87 =
36. 36.99 × 95 =
37. 37.995 × 977 =
38. 38.8 × 9 =
39. 39.13 × 6 =
40. 40.1003 × 1011 =

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