Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 839 · 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. 1.11 × 9 =
2. 2.114 × 86 =
3. 3.113 × 106 =
4. 4.113 × 108 =
5. 5.975 × 962 =
6. 6.1015 × 996 =
7. 7.115 × 92 =
8. 8.981 × 982 =
9. 9.111 × 87 =
10. 10.105 × 108 =
11. 11.98 × 88 =
12. 12.14 × 14 =
13. 13.107 × 113 =
14. 14.90 × 98 =
15. 15.111 × 112 =
16. 16.1007 × 967 =
17. 17.112 × 115 =
18. 18.97 × 91 =
19. 19.105 × 104 =
20. 20.113 × 109 =
21. 21.14 × 7 =
22. 22.89 × 88 =
23. 23.104 × 96 =
24. 24.1014 × 1017 =
25. 25.110 × 91 =
26. 26.107 × 90 =
27. 27.90 × 97 =
28. 28.101 × 103 =
29. 29.7 × 9 =
30. 30.87 × 85 =
31. 31.12 × 11 =
32. 32.101 × 107 =
33. 33.91 × 98 =
34. 34.114 × 110 =
35. 35.86 × 89 =
36. 36.1033 × 1018 =
37. 37.9 × 8 =
38. 38.99 × 91 =
39. 39.104 × 107 =
40. 40.13 × 11 =

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