Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 497 · 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 × 104 =
2. 2.113 × 101 =
3. 3.115 × 94 =
4. 4.9 × 6 =
5. 5.88 × 90 =
6. 6.93 × 98 =
7. 7.87 × 98 =
8. 8.11 × 13 =
9. 9.97 × 94 =
10. 10.8 × 6 =
11. 11.6 × 9 =
12. 12.102 × 102 =
13. 13.13 × 8 =
14. 14.111 × 107 =
15. 15.11 × 7 =
16. 16.6 × 6 =
17. 17.13 × 12 =
18. 18.6 × 9 =
19. 19.9 × 9 =
20. 20.90 × 94 =
21. 21.1028 × 1038 =
22. 22.88 × 94 =
23. 23.12 × 6 =
24. 24.93 × 99 =
25. 25.8 × 9 =
26. 26.8 × 7 =
27. 27.13 × 12 =
28. 28.9 × 9 =
29. 29.98 × 95 =
30. 30.113 × 89 =
31. 31.104 × 114 =
32. 32.106 × 106 =
33. 33.8 × 7 =
34. 34.110 × 91 =
35. 35.104 × 103 =
36. 36.1014 × 1014 =
37. 37.96 × 97 =
38. 38.9 × 8 =
39. 39.12 × 12 =
40. 40.85 × 98 =

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