Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 27 · 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 × 9 =
2. 2.95 × 89 =
3. 3.8 × 6 =
4. 4.8 × 7 =
5. 5.115 × 112 =
6. 6.98 × 90 =
7. 7.11 × 14 =
8. 8.101 × 87 =
9. 9.107 × 107 =
10. 10.89 × 89 =
11. 11.984 × 973 =
12. 12.14 × 11 =
13. 13.86 × 97 =
14. 14.1017 × 999 =
15. 15.91 × 97 =
16. 16.7 × 9 =
17. 17.11 × 9 =
18. 18.115 × 98 =
19. 19.8 × 7 =
20. 20.108 × 92 =
21. 21.112 × 99 =
22. 22.115 × 110 =
23. 23.92 × 85 =
24. 24.14 × 6 =
25. 25.14 × 7 =
26. 26.110 × 101 =
27. 27.102 × 96 =
28. 28.109 × 90 =
29. 29.1002 × 998 =
30. 30.105 × 97 =
31. 31.112 × 102 =
32. 32.1007 × 1011 =
33. 33.12 × 13 =
34. 34.104 × 101 =
35. 35.8 × 9 =
36. 36.6 × 7 =
37. 37.110 × 102 =
38. 38.99 × 90 =
39. 39.102 × 103 =
40. 40.114 × 105 =

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