Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 132 · 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. 1.115 × 103 =
2. 2.97 × 99 =
3. 3.112 × 91 =
4. 4.13 × 12 =
5. 5.8 × 7 =
6. 6.104 × 109 =
7. 7.98 × 90 =
8. 8.12 × 6 =
9. 9.13 × 8 =
10. 10.87 × 86 =
11. 11.96 × 88 =
12. 12.11 × 14 =
13. 13.112 × 97 =
14. 14.99 × 85 =
15. 15.1024 × 1010 =
16. 16.107 × 106 =
17. 17.979 × 966 =
18. 18.1031 × 961 =
19. 19.6 × 6 =
20. 20.99 × 96 =
21. 21.86 × 89 =
22. 22.87 × 86 =
23. 23.13 × 13 =
24. 24.101 × 93 =
25. 25.8 × 8 =
26. 26.991 × 962 =
27. 27.1009 × 1018 =
28. 28.102 × 104 =
29. 29.110 × 105 =
30. 30.105 × 98 =
31. 31.102 × 101 =
32. 32.1003 × 1009 =
33. 33.1014 × 1040 =
34. 34.8 × 6 =
35. 35.109 × 97 =
36. 36.97 × 91 =
37. 37.102 × 98 =
38. 38.6 × 8 =
39. 39.1003 × 1019 =
40. 40.12 × 7 =

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