Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 469 · 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. 1.102 × 112 =
2. 2.86 × 98 =
3. 3.99 × 94 =
4. 4.11 × 9 =
5. 5.6 × 9 =
6. 6.85 × 89 =
7. 7.1015 × 977 =
8. 8.1023 × 1002 =
9. 9.13 × 11 =
10. 10.91 × 99 =
11. 11.982 × 989 =
12. 12.88 × 93 =
13. 13.114 × 105 =
14. 14.97 × 89 =
15. 15.11 × 7 =
16. 16.7 × 6 =
17. 17.115 × 101 =
18. 18.108 × 93 =
19. 19.14 × 11 =
20. 20.13 × 6 =
21. 21.998 × 997 =
22. 22.109 × 113 =
23. 23.1035 × 1032 =
24. 24.6 × 8 =
25. 25.87 × 88 =
26. 26.114 × 97 =
27. 27.967 × 991 =
28. 28.7 × 9 =
29. 29.112 × 99 =
30. 30.102 × 102 =
31. 31.9 × 6 =
32. 32.1020 × 1036 =
33. 33.97 × 86 =
34. 34.8 × 6 =
35. 35.9 × 7 =
36. 36.99 × 95 =
37. 37.114 × 115 =
38. 38.8 × 9 =
39. 39.8 × 6 =
40. 40.1015 × 1012 =

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