Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 903 · 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. 1.13 × 7 =
2. 2.973 × 990 =
3. 3.974 × 985 =
4. 4.96 × 86 =
5. 5.12 × 13 =
6. 6.1021 × 1019 =
7. 7.107 × 97 =
8. 8.11 × 9 =
9. 9.9 × 7 =
10. 10.13 × 8 =
11. 11.12 × 12 =
12. 12.1032 × 982 =
13. 13.980 × 996 =
14. 14.11 × 12 =
15. 15.9 × 9 =
16. 16.111 × 88 =
17. 17.12 × 9 =
18. 18.90 × 92 =
19. 19.1007 × 980 =
20. 20.89 × 94 =
21. 21.12 × 9 =
22. 22.993 × 974 =
23. 23.108 × 91 =
24. 24.11 × 8 =
25. 25.97 × 88 =
26. 26.104 × 97 =
27. 27.101 × 109 =
28. 28.1022 × 999 =
29. 29.7 × 9 =
30. 30.103 × 103 =
31. 31.9 × 7 =
32. 32.13 × 11 =
33. 33.11 × 11 =
34. 34.1002 × 1009 =
35. 35.13 × 12 =
36. 36.106 × 107 =
37. 37.970 × 969 =
38. 38.9 × 6 =
39. 39.9 × 9 =
40. 40.95 × 86 =

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