Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 901 · 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. 1.8 × 7 =
2. 2.12 × 9 =
3. 3.90 × 87 =
4. 4.107 × 93 =
5. 5.85 × 99 =
6. 6.114 × 101 =
7. 7.106 × 87 =
8. 8.105 × 103 =
9. 9.108 × 112 =
10. 10.999 × 960 =
11. 11.103 × 101 =
12. 12.91 × 87 =
13. 13.111 × 97 =
14. 14.1027 × 981 =
15. 15.11 × 14 =
16. 16.115 × 99 =
17. 17.86 × 95 =
18. 18.106 × 93 =
19. 19.86 × 92 =
20. 20.93 × 92 =
21. 21.93 × 86 =
22. 22.6 × 6 =
23. 23.14 × 11 =
24. 24.111 × 89 =
25. 25.102 × 107 =
26. 26.101 × 99 =
27. 27.109 × 105 =
28. 28.111 × 86 =
29. 29.7 × 9 =
30. 30.12 × 14 =
31. 31.13 × 9 =
32. 32.9 × 8 =
33. 33.114 × 101 =
34. 34.113 × 101 =
35. 35.12 × 8 =
36. 36.111 × 111 =
37. 37.89 × 88 =
38. 38.12 × 12 =
39. 39.99 × 97 =
40. 40.14 × 12 =

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