Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 304 · 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. 1.92 × 94 =
2. 2.967 × 997 =
3. 3.1020 × 998 =
4. 4.8 × 8 =
5. 5.1024 × 979 =
6. 6.86 × 86 =
7. 7.91 × 85 =
8. 8.87 × 91 =
9. 9.995 × 971 =
10. 10.91 × 92 =
11. 11.1009 × 1010 =
12. 12.96 × 92 =
13. 13.12 × 14 =
14. 14.14 × 13 =
15. 15.106 × 107 =
16. 16.7 × 7 =
17. 17.968 × 988 =
18. 18.111 × 104 =
19. 19.104 × 88 =
20. 20.113 × 115 =
21. 21.99 × 88 =
22. 22.113 × 107 =
23. 23.6 × 6 =
24. 24.111 × 110 =
25. 25.109 × 93 =
26. 26.11 × 12 =
27. 27.1015 × 1015 =
28. 28.102 × 107 =
29. 29.14 × 7 =
30. 30.87 × 96 =
31. 31.85 × 87 =
32. 32.12 × 8 =
33. 33.11 × 11 =
34. 34.92 × 97 =
35. 35.8 × 7 =
36. 36.11 × 7 =
37. 37.87 × 96 =
38. 38.9 × 8 =
39. 39.104 × 102 =
40. 40.91 × 86 =

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