Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 803 · 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 × 85 =
2. 2.7 × 7 =
3. 3.87 × 90 =
4. 4.14 × 6 =
5. 5.101 × 92 =
6. 6.104 × 85 =
7. 7.97 × 97 =
8. 8.87 × 98 =
9. 9.98 × 92 =
10. 10.11 × 7 =
11. 11.7 × 8 =
12. 12.93 × 90 =
13. 13.13 × 12 =
14. 14.99 × 93 =
15. 15.113 × 109 =
16. 16.990 × 975 =
17. 17.963 × 979 =
18. 18.97 × 87 =
19. 19.87 × 95 =
20. 20.8 × 9 =
21. 21.108 × 105 =
22. 22.12 × 12 =
23. 23.99 × 85 =
24. 24.12 × 13 =
25. 25.87 × 91 =
26. 26.99 × 88 =
27. 27.92 × 96 =
28. 28.1033 × 1027 =
29. 29.88 × 87 =
30. 30.103 × 99 =
31. 31.977 × 985 =
32. 32.1020 × 1003 =
33. 33.114 × 110 =
34. 34.8 × 9 =
35. 35.1027 × 1027 =
36. 36.110 × 114 =
37. 37.96 × 96 =
38. 38.1030 × 1037 =
39. 39.986 × 961 =
40. 40.8 × 8 =

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