Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 781 · 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. 1.109 × 101 =
2. 2.13 × 8 =
3. 3.106 × 107 =
4. 4.96 × 87 =
5. 5.1017 × 1016 =
6. 6.111 × 106 =
7. 7.9 × 8 =
8. 8.91 × 91 =
9. 9.108 × 99 =
10. 10.1020 × 979 =
11. 11.95 × 85 =
12. 12.102 × 91 =
13. 13.12 × 6 =
14. 14.973 × 965 =
15. 15.987 × 973 =
16. 16.12 × 11 =
17. 17.88 × 98 =
18. 18.12 × 9 =
19. 19.9 × 8 =
20. 20.9 × 8 =
21. 21.96 × 96 =
22. 22.97 × 86 =
23. 23.1011 × 1002 =
24. 24.108 × 114 =
25. 25.13 × 14 =
26. 26.109 × 105 =
27. 27.8 × 7 =
28. 28.7 × 6 =
29. 29.99 × 92 =
30. 30.1010 × 1001 =
31. 31.87 × 99 =
32. 32.107 × 102 =
33. 33.88 × 87 =
34. 34.110 × 113 =
35. 35.96 × 92 =
36. 36.114 × 104 =
37. 37.1013 × 1023 =
38. 38.91 × 99 =
39. 39.101 × 95 =
40. 40.110 × 105 =

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