Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 576 · 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. 1.7 × 8 =
2. 2.97 × 86 =
3. 3.85 × 92 =
4. 4.95 × 96 =
5. 5.13 × 14 =
6. 6.8 × 7 =
7. 7.89 × 98 =
8. 8.1001 × 1034 =
9. 9.105 × 103 =
10. 10.114 × 101 =
11. 11.108 × 89 =
12. 12.979 × 991 =
13. 13.983 × 995 =
14. 14.113 × 85 =
15. 15.96 × 86 =
16. 16.1007 × 1009 =
17. 17.102 × 115 =
18. 18.103 × 115 =
19. 19.99 × 97 =
20. 20.14 × 9 =
21. 21.86 × 89 =
22. 22.6 × 9 =
23. 23.6 × 6 =
24. 24.107 × 99 =
25. 25.113 × 101 =
26. 26.1030 × 1020 =
27. 27.1035 × 989 =
28. 28.102 × 114 =
29. 29.6 × 7 =
30. 30.105 × 115 =
31. 31.94 × 92 =
32. 32.93 × 87 =
33. 33.9 × 9 =
34. 34.109 × 88 =
35. 35.1035 × 1036 =
36. 36.87 × 99 =
37. 37.1015 × 1009 =
38. 38.14 × 9 =
39. 39.99 × 91 =
40. 40.92 × 96 =

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