Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 571 · 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. 1.13 × 8 =
2. 2.105 × 102 =
3. 3.87 × 88 =
4. 4.89 × 87 =
5. 5.97 × 99 =
6. 6.99 × 93 =
7. 7.103 × 104 =
8. 8.14 × 14 =
9. 9.12 × 13 =
10. 10.98 × 85 =
11. 11.6 × 6 =
12. 12.13 × 11 =
13. 13.9 × 6 =
14. 14.96 × 97 =
15. 15.93 × 95 =
16. 16.11 × 11 =
17. 17.8 × 8 =
18. 18.95 × 85 =
19. 19.114 × 89 =
20. 20.971 × 984 =
21. 21.111 × 111 =
22. 22.11 × 6 =
23. 23.109 × 85 =
24. 24.88 × 94 =
25. 25.95 × 92 =
26. 26.93 × 89 =
27. 27.104 × 91 =
28. 28.1005 × 976 =
29. 29.90 × 96 =
30. 30.115 × 110 =
31. 31.115 × 89 =
32. 32.109 × 85 =
33. 33.112 × 111 =
34. 34.12 × 7 =
35. 35.96 × 93 =
36. 36.9 × 8 =
37. 37.1034 × 1010 =
38. 38.102 × 94 =
39. 39.89 × 90 =
40. 40.91 × 89 =

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