Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 330 · 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. 1.97 × 98 =
2. 2.101 × 112 =
3. 3.109 × 89 =
4. 4.9 × 8 =
5. 5.8 × 9 =
6. 6.11 × 11 =
7. 7.108 × 99 =
8. 8.977 × 984 =
9. 9.13 × 12 =
10. 10.108 × 85 =
11. 11.114 × 97 =
12. 12.14 × 14 =
13. 13.115 × 106 =
14. 14.110 × 106 =
15. 15.88 × 90 =
16. 16.105 × 94 =
17. 17.112 × 89 =
18. 18.85 × 87 =
19. 19.7 × 8 =
20. 20.970 × 981 =
21. 21.6 × 6 =
22. 22.114 × 91 =
23. 23.104 × 114 =
24. 24.101 × 98 =
25. 25.85 × 96 =
26. 26.93 × 96 =
27. 27.105 × 111 =
28. 28.98 × 93 =
29. 29.97 × 91 =
30. 30.992 × 987 =
31. 31.103 × 106 =
32. 32.1024 × 1006 =
33. 33.975 × 973 =
34. 34.12 × 11 =
35. 35.13 × 8 =
36. 36.13 × 13 =
37. 37.103 × 115 =
38. 38.11 × 11 =
39. 39.975 × 998 =
40. 40.13 × 13 =

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