Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 505 · 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. 1.89 × 97 =
2. 2.994 × 994 =
3. 3.1022 × 1040 =
4. 4.13 × 9 =
5. 5.114 × 97 =
6. 6.95 × 97 =
7. 7.7 × 7 =
8. 8.1021 × 1013 =
9. 9.8 × 6 =
10. 10.111 × 107 =
11. 11.86 × 92 =
12. 12.111 × 107 =
13. 13.13 × 11 =
14. 14.8 × 7 =
15. 15.107 × 92 =
16. 16.975 × 962 =
17. 17.109 × 93 =
18. 18.99 × 91 =
19. 19.9 × 6 =
20. 20.11 × 14 =
21. 21.975 × 968 =
22. 22.1008 × 1026 =
23. 23.9 × 6 =
24. 24.11 × 11 =
25. 25.91 × 97 =
26. 26.6 × 9 =
27. 27.114 × 101 =
28. 28.979 × 985 =
29. 29.6 × 6 =
30. 30.112 × 86 =
31. 31.1024 × 1001 =
32. 32.113 × 102 =
33. 33.8 × 9 =
34. 34.108 × 91 =
35. 35.96 × 99 =
36. 36.1031 × 1029 =
37. 37.14 × 8 =
38. 38.1037 × 1002 =
39. 39.997 × 981 =
40. 40.992 × 961 =

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