Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 574 · 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. 1.1029 × 1039 =
2. 2.962 × 976 =
3. 3.114 × 108 =
4. 4.1029 × 1023 =
5. 5.8 × 9 =
6. 6.113 × 112 =
7. 7.104 × 98 =
8. 8.91 × 97 =
9. 9.110 × 101 =
10. 10.98 × 98 =
11. 11.91 × 92 =
12. 12.95 × 89 =
13. 13.12 × 8 =
14. 14.114 × 94 =
15. 15.1002 × 1004 =
16. 16.14 × 6 =
17. 17.1010 × 1035 =
18. 18.105 × 102 =
19. 19.11 × 9 =
20. 20.9 × 7 =
21. 21.94 × 93 =
22. 22.105 × 90 =
23. 23.104 × 102 =
24. 24.113 × 92 =
25. 25.105 × 89 =
26. 26.11 × 12 =
27. 27.983 × 985 =
28. 28.6 × 7 =
29. 29.1025 × 1001 =
30. 30.1031 × 1007 =
31. 31.111 × 103 =
32. 32.13 × 6 =
33. 33.87 × 98 =
34. 34.13 × 9 =
35. 35.11 × 13 =
36. 36.103 × 112 =
37. 37.92 × 98 =
38. 38.8 × 7 =
39. 39.1035 × 974 =
40. 40.997 × 963 =

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