Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 889 · 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. 1.1027 × 972 =
2. 2.102 × 94 =
3. 3.987 × 996 =
4. 4.7 × 7 =
5. 5.99 × 87 =
6. 6.107 × 112 =
7. 7.1033 × 1007 =
8. 8.8 × 7 =
9. 9.108 × 92 =
10. 10.13 × 13 =
11. 11.97 × 91 =
12. 12.8 × 9 =
13. 13.103 × 86 =
14. 14.13 × 9 =
15. 15.103 × 87 =
16. 16.1005 × 968 =
17. 17.95 × 91 =
18. 18.6 × 8 =
19. 19.95 × 85 =
20. 20.99 × 86 =
21. 21.1012 × 998 =
22. 22.7 × 7 =
23. 23.103 × 115 =
24. 24.105 × 115 =
25. 25.103 × 104 =
26. 26.97 × 99 =
27. 27.960 × 997 =
28. 28.95 × 93 =
29. 29.110 × 114 =
30. 30.8 × 6 =
31. 31.6 × 8 =
32. 32.90 × 97 =
33. 33.99 × 87 =
34. 34.7 × 9 =
35. 35.996 × 979 =
36. 36.91 × 90 =
37. 37.8 × 8 =
38. 38.1025 × 1021 =
39. 39.98 × 96 =
40. 40.13 × 6 =

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