Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 108 · 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. 1.995 × 970 =
2. 2.8 × 7 =
3. 3.108 × 109 =
4. 4.94 × 99 =
5. 5.92 × 86 =
6. 6.108 × 90 =
7. 7.99 × 98 =
8. 8.96 × 98 =
9. 9.7 × 6 =
10. 10.96 × 97 =
11. 11.112 × 115 =
12. 12.998 × 992 =
13. 13.91 × 97 =
14. 14.111 × 95 =
15. 15.96 × 94 =
16. 16.8 × 9 =
17. 17.103 × 103 =
18. 18.90 × 87 =
19. 19.114 × 96 =
20. 20.96 × 86 =
21. 21.103 × 91 =
22. 22.93 × 99 =
23. 23.1019 × 1018 =
24. 24.9 × 9 =
25. 25.11 × 8 =
26. 26.14 × 8 =
27. 27.1008 × 1015 =
28. 28.115 × 85 =
29. 29.1009 × 987 =
30. 30.99 × 96 =
31. 31.92 × 99 =
32. 32.91 × 95 =
33. 33.90 × 88 =
34. 34.1021 × 976 =
35. 35.7 × 9 =
36. 36.112 × 93 =
37. 37.997 × 984 =
38. 38.104 × 86 =
39. 39.93 × 94 =
40. 40.101 × 88 =

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