Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 353 · 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. 1.1031 × 966 =
2. 2.109 × 108 =
3. 3.93 × 99 =
4. 4.964 × 962 =
5. 5.1027 × 1028 =
6. 6.93 × 90 =
7. 7.7 × 9 =
8. 8.115 × 98 =
9. 9.8 × 9 =
10. 10.6 × 9 =
11. 11.7 × 9 =
12. 12.94 × 90 =
13. 13.104 × 104 =
14. 14.8 × 8 =
15. 15.13 × 12 =
16. 16.1036 × 1011 =
17. 17.91 × 94 =
18. 18.112 × 114 =
19. 19.101 × 112 =
20. 20.113 × 109 =
21. 21.8 × 7 =
22. 22.93 × 88 =
23. 23.1028 × 1004 =
24. 24.112 × 101 =
25. 25.8 × 9 =
26. 26.115 × 88 =
27. 27.101 × 99 =
28. 28.92 × 98 =
29. 29.85 × 87 =
30. 30.113 × 92 =
31. 31.12 × 11 =
32. 32.8 × 9 =
33. 33.9 × 9 =
34. 34.12 × 9 =
35. 35.92 × 95 =
36. 36.104 × 88 =
37. 37.1021 × 1012 =
38. 38.963 × 985 =
39. 39.108 × 111 =
40. 40.89 × 99 =

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