Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 814 · 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. 1.90 × 85 =
2. 2.86 × 96 =
3. 3.110 × 110 =
4. 4.92 × 94 =
5. 5.94 × 97 =
6. 6.1024 × 1018 =
7. 7.97 × 99 =
8. 8.11 × 13 =
9. 9.8 × 6 =
10. 10.9 × 7 =
11. 11.109 × 106 =
12. 12.9 × 6 =
13. 13.87 × 91 =
14. 14.97 × 91 =
15. 15.106 × 112 =
16. 16.96 × 97 =
17. 17.94 × 98 =
18. 18.14 × 6 =
19. 19.9 × 6 =
20. 20.6 × 6 =
21. 21.14 × 8 =
22. 22.12 × 12 =
23. 23.104 × 98 =
24. 24.1033 × 1040 =
25. 25.93 × 99 =
26. 26.101 × 98 =
27. 27.107 × 108 =
28. 28.106 × 94 =
29. 29.14 × 6 =
30. 30.8 × 6 =
31. 31.1012 × 1001 =
32. 32.983 × 975 =
33. 33.14 × 7 =
34. 34.103 × 93 =
35. 35.6 × 6 =
36. 36.6 × 6 =
37. 37.86 × 88 =
38. 38.89 × 94 =
39. 39.112 × 101 =
40. 40.11 × 13 =

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