Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 624 · 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 × 90 =
2. 2.8 × 8 =
3. 3.89 × 96 =
4. 4.1028 × 998 =
5. 5.11 × 7 =
6. 6.1009 × 1021 =
7. 7.11 × 11 =
8. 8.96 × 91 =
9. 9.96 × 93 =
10. 10.12 × 6 =
11. 11.11 × 11 =
12. 12.6 × 6 =
13. 13.7 × 7 =
14. 14.1020 × 1039 =
15. 15.110 × 87 =
16. 16.970 × 992 =
17. 17.998 × 982 =
18. 18.6 × 8 =
19. 19.964 × 986 =
20. 20.114 × 90 =
21. 21.11 × 12 =
22. 22.98 × 90 =
23. 23.985 × 989 =
24. 24.89 × 85 =
25. 25.86 × 86 =
26. 26.967 × 979 =
27. 27.1032 × 1024 =
28. 28.115 × 96 =
29. 29.88 × 94 =
30. 30.986 × 973 =
31. 31.106 × 111 =
32. 32.1003 × 1013 =
33. 33.1026 × 969 =
34. 34.13 × 13 =
35. 35.105 × 114 =
36. 36.92 × 87 =
37. 37.101 × 110 =
38. 38.87 × 86 =
39. 39.1025 × 1014 =
40. 40.12 × 11 =

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