Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 937 · 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. 1.91 × 85 =
2. 2.89 × 88 =
3. 3.1008 × 999 =
4. 4.7 × 8 =
5. 5.1005 × 989 =
6. 6.113 × 108 =
7. 7.88 × 94 =
8. 8.105 × 107 =
9. 9.87 × 85 =
10. 10.97 × 91 =
11. 11.7 × 7 =
12. 12.1012 × 1037 =
13. 13.7 × 6 =
14. 14.106 × 105 =
15. 15.1012 × 1020 =
16. 16.111 × 98 =
17. 17.103 × 105 =
18. 18.1039 × 1038 =
19. 19.96 × 87 =
20. 20.92 × 99 =
21. 21.14 × 14 =
22. 22.99 × 96 =
23. 23.93 × 91 =
24. 24.86 × 94 =
25. 25.8 × 8 =
26. 26.95 × 94 =
27. 27.87 × 86 =
28. 28.6 × 6 =
29. 29.99 × 90 =
30. 30.6 × 6 =
31. 31.110 × 97 =
32. 32.1010 × 970 =
33. 33.984 × 961 =
34. 34.12 × 11 =
35. 35.7 × 7 =
36. 36.14 × 12 =
37. 37.1005 × 1037 =
38. 38.9 × 8 =
39. 39.9 × 7 =
40. 40.9 × 8 =

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