Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 445 · 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 × 99 =
2. 2.87 × 90 =
3. 3.90 × 93 =
4. 4.85 × 85 =
5. 5.1028 × 1037 =
6. 6.99 × 91 =
7. 7.104 × 85 =
8. 8.11 × 14 =
9. 9.102 × 114 =
10. 10.85 × 92 =
11. 11.966 × 991 =
12. 12.12 × 9 =
13. 13.87 × 87 =
14. 14.6 × 8 =
15. 15.106 × 112 =
16. 16.996 × 965 =
17. 17.88 × 92 =
18. 18.112 × 90 =
19. 19.8 × 6 =
20. 20.86 × 94 =
21. 21.94 × 89 =
22. 22.112 × 113 =
23. 23.113 × 86 =
24. 24.89 × 98 =
25. 25.1029 × 969 =
26. 26.114 × 96 =
27. 27.102 × 94 =
28. 28.1026 × 1010 =
29. 29.103 × 112 =
30. 30.113 × 103 =
31. 31.99 × 94 =
32. 32.108 × 108 =
33. 33.112 × 113 =
34. 34.106 × 112 =
35. 35.102 × 91 =
36. 36.1033 × 972 =
37. 37.13 × 7 =
38. 38.95 × 91 =
39. 39.12 × 9 =
40. 40.101 × 99 =

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