Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 566 · 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. 1.89 × 86 =
2. 2.107 × 107 =
3. 3.91 × 86 =
4. 4.6 × 8 =
5. 5.96 × 91 =
6. 6.993 × 975 =
7. 7.12 × 14 =
8. 8.9 × 7 =
9. 9.11 × 12 =
10. 10.1001 × 1009 =
11. 11.9 × 6 =
12. 12.109 × 87 =
13. 13.101 × 101 =
14. 14.93 × 87 =
15. 15.111 × 86 =
16. 16.12 × 13 =
17. 17.1028 × 1022 =
18. 18.107 × 99 =
19. 19.8 × 6 =
20. 20.13 × 13 =
21. 21.961 × 984 =
22. 22.111 × 97 =
23. 23.108 × 107 =
24. 24.108 × 91 =
25. 25.86 × 99 =
26. 26.114 × 104 =
27. 27.110 × 102 =
28. 28.12 × 9 =
29. 29.112 × 110 =
30. 30.1002 × 973 =
31. 31.8 × 9 =
32. 32.14 × 12 =
33. 33.11 × 7 =
34. 34.1040 × 1011 =
35. 35.98 × 99 =
36. 36.94 × 95 =
37. 37.87 × 93 =
38. 38.85 × 91 =
39. 39.6 × 6 =
40. 40.11 × 11 =

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