Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 20 · 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. 1.102 × 85 =
2. 2.7 × 9 =
3. 3.1031 × 1024 =
4. 4.14 × 9 =
5. 5.1011 × 1011 =
6. 6.101 × 91 =
7. 7.106 × 88 =
8. 8.968 × 961 =
9. 9.11 × 11 =
10. 10.1034 × 1028 =
11. 11.109 × 89 =
12. 12.9 × 8 =
13. 13.93 × 97 =
14. 14.94 × 94 =
15. 15.91 × 96 =
16. 16.104 × 109 =
17. 17.7 × 7 =
18. 18.106 × 103 =
19. 19.996 × 963 =
20. 20.102 × 102 =
21. 21.1020 × 1009 =
22. 22.94 × 94 =
23. 23.11 × 7 =
24. 24.103 × 103 =
25. 25.96 × 89 =
26. 26.114 × 114 =
27. 27.1019 × 1002 =
28. 28.88 × 87 =
29. 29.109 × 115 =
30. 30.102 × 91 =
31. 31.974 × 996 =
32. 32.94 × 99 =
33. 33.112 × 101 =
34. 34.11 × 13 =
35. 35.11 × 6 =
36. 36.92 × 98 =
37. 37.8 × 7 =
38. 38.1013 × 1010 =
39. 39.6 × 6 =
40. 40.96 × 88 =

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