Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 358 · 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. 1.9 × 9 =
2. 2.13 × 13 =
3. 3.1012 × 1008 =
4. 4.105 × 98 =
5. 5.114 × 101 =
6. 6.997 × 962 =
7. 7.12 × 11 =
8. 8.88 × 97 =
9. 9.110 × 93 =
10. 10.98 × 92 =
11. 11.91 × 92 =
12. 12.9 × 9 =
13. 13.11 × 6 =
14. 14.970 × 998 =
15. 15.109 × 98 =
16. 16.87 × 99 =
17. 17.7 × 9 =
18. 18.990 × 981 =
19. 19.1035 × 1040 =
20. 20.94 × 91 =
21. 21.7 × 9 =
22. 22.1008 × 1009 =
23. 23.106 × 101 =
24. 24.104 × 105 =
25. 25.7 × 7 =
26. 26.1009 × 984 =
27. 27.93 × 96 =
28. 28.114 × 95 =
29. 29.1008 × 1009 =
30. 30.101 × 112 =
31. 31.91 × 93 =
32. 32.106 × 112 =
33. 33.989 × 976 =
34. 34.115 × 111 =
35. 35.12 × 14 =
36. 36.992 × 998 =
37. 37.102 × 111 =
38. 38.12 × 14 =
39. 39.99 × 89 =
40. 40.92 × 99 =

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