Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 907 · 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. 1.6 × 9 =
2. 2.979 × 994 =
3. 3.110 × 105 =
4. 4.9 × 9 =
5. 5.1023 × 989 =
6. 6.89 × 89 =
7. 7.101 × 99 =
8. 8.88 × 88 =
9. 9.109 × 90 =
10. 10.1020 × 1023 =
11. 11.1025 × 998 =
12. 12.6 × 7 =
13. 13.114 × 95 =
14. 14.111 × 103 =
15. 15.93 × 92 =
16. 16.14 × 13 =
17. 17.13 × 13 =
18. 18.99 × 88 =
19. 19.1005 × 976 =
20. 20.997 × 994 =
21. 21.115 × 114 =
22. 22.114 × 92 =
23. 23.9 × 7 =
24. 24.11 × 11 =
25. 25.12 × 14 =
26. 26.11 × 8 =
27. 27.106 × 115 =
28. 28.101 × 105 =
29. 29.115 × 92 =
30. 30.7 × 8 =
31. 31.7 × 6 =
32. 32.1009 × 1016 =
33. 33.86 × 99 =
34. 34.107 × 115 =
35. 35.112 × 101 =
36. 36.103 × 98 =
37. 37.114 × 107 =
38. 38.105 × 98 =
39. 39.90 × 97 =
40. 40.986 × 974 =

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