Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 590 · 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. 1.1010 × 1031 =
2. 2.14 × 11 =
3. 3.1008 × 1016 =
4. 4.13 × 6 =
5. 5.114 × 86 =
6. 6.110 × 102 =
7. 7.13 × 13 =
8. 8.968 × 961 =
9. 9.13 × 12 =
10. 10.104 × 96 =
11. 11.99 × 98 =
12. 12.114 × 104 =
13. 13.86 × 93 =
14. 14.13 × 12 =
15. 15.96 × 92 =
16. 16.107 × 108 =
17. 17.13 × 14 =
18. 18.102 × 115 =
19. 19.103 × 88 =
20. 20.107 × 101 =
21. 21.13 × 8 =
22. 22.11 × 13 =
23. 23.101 × 101 =
24. 24.101 × 101 =
25. 25.112 × 99 =
26. 26.102 × 99 =
27. 27.983 × 976 =
28. 28.86 × 97 =
29. 29.93 × 89 =
30. 30.995 × 971 =
31. 31.11 × 9 =
32. 32.90 × 93 =
33. 33.8 × 8 =
34. 34.11 × 12 =
35. 35.12 × 14 =
36. 36.95 × 98 =
37. 37.990 × 994 =
38. 38.1024 × 991 =
39. 39.115 × 103 =
40. 40.98 × 90 =

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