Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 961 · 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. 1.92 × 89 =
2. 2.104 × 93 =
3. 3.90 × 92 =
4. 4.113 × 113 =
5. 5.9 × 7 =
6. 6.85 × 97 =
7. 7.7 × 8 =
8. 8.1002 × 984 =
9. 9.8 × 7 =
10. 10.13 × 14 =
11. 11.103 × 87 =
12. 12.11 × 7 =
13. 13.115 × 103 =
14. 14.8 × 9 =
15. 15.13 × 14 =
16. 16.91 × 93 =
17. 17.87 × 94 =
18. 18.87 × 95 =
19. 19.14 × 14 =
20. 20.14 × 13 =
21. 21.110 × 92 =
22. 22.12 × 14 =
23. 23.107 × 103 =
24. 24.11 × 7 =
25. 25.965 × 990 =
26. 26.1017 × 1033 =
27. 27.11 × 9 =
28. 28.7 × 8 =
29. 29.975 × 991 =
30. 30.993 × 979 =
31. 31.106 × 99 =
32. 32.107 × 88 =
33. 33.102 × 109 =
34. 34.102 × 105 =
35. 35.104 × 108 =
36. 36.1038 × 982 =
37. 37.98 × 91 =
38. 38.12 × 13 =
39. 39.13 × 8 =
40. 40.11 × 13 =

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