Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 569 · 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. 1.12 × 12 =
2. 2.972 × 995 =
3. 3.94 × 88 =
4. 4.109 × 114 =
5. 5.6 × 9 =
6. 6.94 × 93 =
7. 7.103 × 105 =
8. 8.7 × 7 =
9. 9.108 × 93 =
10. 10.94 × 97 =
11. 11.998 × 994 =
12. 12.8 × 8 =
13. 13.6 × 6 =
14. 14.13 × 6 =
15. 15.12 × 11 =
16. 16.90 × 87 =
17. 17.107 × 102 =
18. 18.12 × 14 =
19. 19.94 × 91 =
20. 20.92 × 85 =
21. 21.973 × 986 =
22. 22.115 × 86 =
23. 23.102 × 98 =
24. 24.109 × 108 =
25. 25.9 × 8 =
26. 26.95 × 92 =
27. 27.105 × 112 =
28. 28.86 × 92 =
29. 29.104 × 111 =
30. 30.99 × 89 =
31. 31.1010 × 1023 =
32. 32.9 × 7 =
33. 33.102 × 86 =
34. 34.106 × 98 =
35. 35.1018 × 1037 =
36. 36.93 × 88 =
37. 37.89 × 97 =
38. 38.8 × 8 =
39. 39.93 × 95 =
40. 40.115 × 101 =

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