Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 863 · 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. 2.88 × 87 =
3. 3.115 × 96 =
4. 4.107 × 111 =
5. 5.9 × 9 =
6. 6.1012 × 1016 =
7. 7.102 × 93 =
8. 8.112 × 98 =
9. 9.102 × 106 =
10. 10.108 × 104 =
11. 11.109 × 103 =
12. 12.88 × 87 =
13. 13.11 × 9 =
14. 14.113 × 97 =
15. 15.113 × 111 =
16. 16.102 × 102 =
17. 17.99 × 88 =
18. 18.93 × 90 =
19. 19.95 × 93 =
20. 20.101 × 102 =
21. 21.12 × 11 =
22. 22.13 × 11 =
23. 23.1027 × 973 =
24. 24.111 × 106 =
25. 25.90 × 90 =
26. 26.13 × 6 =
27. 27.110 × 109 =
28. 28.9 × 8 =
29. 29.104 × 96 =
30. 30.115 × 103 =
31. 31.110 × 94 =
32. 32.1009 × 1011 =
33. 33.11 × 6 =
34. 34.9 × 9 =
35. 35.8 × 7 =
36. 36.1015 × 972 =
37. 37.101 × 98 =
38. 38.1002 × 992 =
39. 39.6 × 9 =
40. 40.14 × 8 =

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