Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 192 · 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 × 8 =
2. 2.96 × 91 =
3. 3.1013 × 1015 =
4. 4.111 × 111 =
5. 5.99 × 90 =
6. 6.96 × 99 =
7. 7.13 × 8 =
8. 8.109 × 105 =
9. 9.114 × 114 =
10. 10.1006 × 1009 =
11. 11.6 × 6 =
12. 12.105 × 112 =
13. 13.12 × 11 =
14. 14.112 × 87 =
15. 15.11 × 13 =
16. 16.11 × 11 =
17. 17.94 × 88 =
18. 18.1028 × 987 =
19. 19.90 × 95 =
20. 20.6 × 6 =
21. 21.90 × 93 =
22. 22.11 × 6 =
23. 23.96 × 91 =
24. 24.1022 × 1007 =
25. 25.14 × 9 =
26. 26.104 × 92 =
27. 27.14 × 12 =
28. 28.112 × 112 =
29. 29.1012 × 994 =
30. 30.97 × 97 =
31. 31.105 × 99 =
32. 32.90 × 89 =
33. 33.9 × 8 =
34. 34.1005 × 1008 =
35. 35.96 × 86 =
36. 36.106 × 103 =
37. 37.112 × 87 =
38. 38.85 × 95 =
39. 39.11 × 13 =
40. 40.106 × 99 =

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