Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 112 · 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. 1.978 × 990 =
2. 2.1003 × 1040 =
3. 3.96 × 90 =
4. 4.93 × 91 =
5. 5.1018 × 1017 =
6. 6.1015 × 1033 =
7. 7.985 × 987 =
8. 8.110 × 104 =
9. 9.14 × 13 =
10. 10.99 × 93 =
11. 11.85 × 92 =
12. 12.106 × 110 =
13. 13.11 × 14 =
14. 14.114 × 110 =
15. 15.12 × 8 =
16. 16.14 × 9 =
17. 17.105 × 104 =
18. 18.113 × 92 =
19. 19.94 × 97 =
20. 20.111 × 106 =
21. 21.13 × 11 =
22. 22.104 × 110 =
23. 23.93 × 93 =
24. 24.87 × 94 =
25. 25.991 × 988 =
26. 26.91 × 90 =
27. 27.96 × 97 =
28. 28.102 × 102 =
29. 29.1034 × 979 =
30. 30.108 × 96 =
31. 31.12 × 6 =
32. 32.107 × 107 =
33. 33.12 × 11 =
34. 34.109 × 110 =
35. 35.7 × 7 =
36. 36.95 × 97 =
37. 37.7 × 9 =
38. 38.961 × 988 =
39. 39.104 × 92 =
40. 40.103 × 89 =

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