Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 993 · 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. 1.104 × 108 =
2. 2.12 × 12 =
3. 3.11 × 11 =
4. 4.11 × 9 =
5. 5.983 × 981 =
6. 6.8 × 9 =
7. 7.95 × 91 =
8. 8.1001 × 1027 =
9. 9.964 × 993 =
10. 10.104 × 93 =
11. 11.87 × 99 =
12. 12.108 × 87 =
13. 13.11 × 14 =
14. 14.93 × 96 =
15. 15.1006 × 989 =
16. 16.104 × 102 =
17. 17.102 × 105 =
18. 18.110 × 113 =
19. 19.12 × 13 =
20. 20.103 × 91 =
21. 21.14 × 11 =
22. 22.112 × 91 =
23. 23.85 × 92 =
24. 24.12 × 11 =
25. 25.97 × 96 =
26. 26.106 × 106 =
27. 27.85 × 87 =
28. 28.14 × 11 =
29. 29.8 × 9 =
30. 30.14 × 14 =
31. 31.9 × 6 =
32. 32.95 × 90 =
33. 33.101 × 93 =
34. 34.88 × 87 =
35. 35.110 × 85 =
36. 36.99 × 86 =
37. 37.108 × 114 =
38. 38.970 × 965 =
39. 39.113 × 99 =
40. 40.1007 × 1008 =

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