Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 493 · 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. 1.105 × 109 =
2. 2.109 × 95 =
3. 3.11 × 11 =
4. 4.14 × 13 =
5. 5.11 × 9 =
6. 6.7 × 9 =
7. 7.112 × 98 =
8. 8.1014 × 987 =
9. 9.11 × 9 =
10. 10.91 × 97 =
11. 11.1015 × 963 =
12. 12.98 × 99 =
13. 13.967 × 983 =
14. 14.102 × 114 =
15. 15.115 × 93 =
16. 16.114 × 105 =
17. 17.11 × 6 =
18. 18.9 × 7 =
19. 19.106 × 87 =
20. 20.14 × 9 =
21. 21.111 × 114 =
22. 22.90 × 86 =
23. 23.8 × 9 =
24. 24.11 × 11 =
25. 25.106 × 89 =
26. 26.965 × 968 =
27. 27.104 × 112 =
28. 28.112 × 102 =
29. 29.97 × 96 =
30. 30.104 × 98 =
31. 31.93 × 99 =
32. 32.98 × 92 =
33. 33.9 × 8 =
34. 34.974 × 986 =
35. 35.96 × 96 =
36. 36.9 × 7 =
37. 37.104 × 99 =
38. 38.102 × 102 =
39. 39.101 × 97 =
40. 40.9 × 9 =

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