Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 86 · 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. 1.108 × 107 =
2. 2.996 × 960 =
3. 3.993 × 968 =
4. 4.92 × 91 =
5. 5.992 × 972 =
6. 6.92 × 87 =
7. 7.87 × 85 =
8. 8.107 × 115 =
9. 9.85 × 96 =
10. 10.113 × 110 =
11. 11.112 × 85 =
12. 12.12 × 14 =
13. 13.11 × 8 =
14. 14.1039 × 962 =
15. 15.12 × 14 =
16. 16.103 × 102 =
17. 17.6 × 7 =
18. 18.12 × 12 =
19. 19.85 × 91 =
20. 20.7 × 7 =
21. 21.106 × 106 =
22. 22.7 × 7 =
23. 23.13 × 12 =
24. 24.91 × 93 =
25. 25.107 × 110 =
26. 26.1008 × 1040 =
27. 27.108 × 105 =
28. 28.85 × 92 =
29. 29.103 × 104 =
30. 30.1002 × 1008 =
31. 31.93 × 88 =
32. 32.14 × 11 =
33. 33.1009 × 973 =
34. 34.111 × 98 =
35. 35.109 × 115 =
36. 36.975 × 960 =
37. 37.1037 × 1018 =
38. 38.115 × 102 =
39. 39.6 × 9 =
40. 40.113 × 85 =

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