Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 835 · 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. 1.104 × 105 =
2. 2.975 × 999 =
3. 3.9 × 7 =
4. 4.102 × 101 =
5. 5.12 × 8 =
6. 6.13 × 11 =
7. 7.14 × 7 =
8. 8.89 × 90 =
9. 9.11 × 8 =
10. 10.8 × 7 =
11. 11.88 × 91 =
12. 12.1040 × 982 =
13. 13.997 × 961 =
14. 14.11 × 13 =
15. 15.91 × 87 =
16. 16.1004 × 980 =
17. 17.93 × 92 =
18. 18.14 × 8 =
19. 19.90 × 86 =
20. 20.112 × 113 =
21. 21.102 × 112 =
22. 22.991 × 963 =
23. 23.13 × 14 =
24. 24.88 × 90 =
25. 25.13 × 12 =
26. 26.93 × 87 =
27. 27.13 × 11 =
28. 28.1039 × 1021 =
29. 29.102 × 95 =
30. 30.86 × 89 =
31. 31.6 × 9 =
32. 32.13 × 13 =
33. 33.11 × 12 =
34. 34.1026 × 1015 =
35. 35.12 × 14 =
36. 36.14 × 12 =
37. 37.115 × 104 =
38. 38.7 × 6 =
39. 39.9 × 6 =
40. 40.88 × 90 =

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