Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 642 · 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. 1.88 × 92 =
2. 2.93 × 96 =
3. 3.112 × 113 =
4. 4.99 × 88 =
5. 5.107 × 86 =
6. 6.99 × 94 =
7. 7.104 × 106 =
8. 8.12 × 8 =
9. 9.91 × 88 =
10. 10.104 × 105 =
11. 11.111 × 97 =
12. 12.95 × 98 =
13. 13.7 × 9 =
14. 14.102 × 113 =
15. 15.9 × 6 =
16. 16.110 × 113 =
17. 17.1024 × 988 =
18. 18.103 × 87 =
19. 19.111 × 85 =
20. 20.94 × 87 =
21. 21.104 × 87 =
22. 22.107 × 90 =
23. 23.112 × 91 =
24. 24.106 × 105 =
25. 25.12 × 11 =
26. 26.9 × 9 =
27. 27.993 × 984 =
28. 28.1003 × 1023 =
29. 29.92 × 94 =
30. 30.90 × 91 =
31. 31.96 × 92 =
32. 32.14 × 14 =
33. 33.90 × 95 =
34. 34.9 × 8 =
35. 35.103 × 111 =
36. 36.1023 × 983 =
37. 37.13 × 13 =
38. 38.86 × 89 =
39. 39.85 × 86 =
40. 40.11 × 12 =

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