Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 273 · 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. 1.7 × 9 =
2. 2.102 × 103 =
3. 3.11 × 7 =
4. 4.104 × 109 =
5. 5.7 × 6 =
6. 6.106 × 103 =
7. 7.108 × 105 =
8. 8.12 × 14 =
9. 9.987 × 981 =
10. 10.99 × 86 =
11. 11.1007 × 1028 =
12. 12.9 × 6 =
13. 13.6 × 8 =
14. 14.111 × 115 =
15. 15.968 × 962 =
16. 16.85 × 95 =
17. 17.13 × 11 =
18. 18.975 × 988 =
19. 19.9 × 7 =
20. 20.980 × 973 =
21. 21.6 × 7 =
22. 22.9 × 7 =
23. 23.1031 × 1040 =
24. 24.113 × 94 =
25. 25.103 × 107 =
26. 26.110 × 107 =
27. 27.112 × 114 =
28. 28.13 × 11 =
29. 29.8 × 9 =
30. 30.103 × 107 =
31. 31.994 × 985 =
32. 32.6 × 7 =
33. 33.109 × 91 =
34. 34.99 × 85 =
35. 35.103 × 96 =
36. 36.12 × 9 =
37. 37.98 × 86 =
38. 38.91 × 99 =
39. 39.115 × 92 =
40. 40.995 × 984 =

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