Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 711 · 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. 1.104 × 90 =
2. 2.94 × 99 =
3. 3.970 × 968 =
4. 4.87 × 99 =
5. 5.113 × 101 =
6. 6.11 × 14 =
7. 7.96 × 85 =
8. 8.983 × 989 =
9. 9.110 × 113 =
10. 10.109 × 107 =
11. 11.14 × 14 =
12. 12.1033 × 963 =
13. 13.999 × 991 =
14. 14.115 × 101 =
15. 15.105 × 111 =
16. 16.85 × 89 =
17. 17.1006 × 1019 =
18. 18.1002 × 1006 =
19. 19.8 × 6 =
20. 20.11 × 11 =
21. 21.98 × 90 =
22. 22.1005 × 1035 =
23. 23.113 × 111 =
24. 24.1013 × 1030 =
25. 25.104 × 91 =
26. 26.90 × 94 =
27. 27.8 × 7 =
28. 28.13 × 12 =
29. 29.6 × 6 =
30. 30.979 × 997 =
31. 31.979 × 976 =
32. 32.7 × 9 =
33. 33.13 × 13 =
34. 34.112 × 95 =
35. 35.9 × 8 =
36. 36.6 × 6 =
37. 37.8 × 8 =
38. 38.14 × 9 =
39. 39.85 × 90 =
40. 40.101 × 113 =

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