Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 740 · 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. 1.998 × 978 =
2. 2.993 × 998 =
3. 3.1034 × 975 =
4. 4.86 × 99 =
5. 5.1038 × 1013 =
6. 6.92 × 97 =
7. 7.96 × 86 =
8. 8.8 × 9 =
9. 9.1026 × 972 =
10. 10.103 × 85 =
11. 11.107 × 101 =
12. 12.1033 × 978 =
13. 13.103 × 105 =
14. 14.110 × 101 =
15. 15.105 × 105 =
16. 16.11 × 6 =
17. 17.11 × 9 =
18. 18.91 × 90 =
19. 19.12 × 8 =
20. 20.88 × 90 =
21. 21.85 × 91 =
22. 22.94 × 85 =
23. 23.1024 × 1001 =
24. 24.8 × 9 =
25. 25.94 × 96 =
26. 26.88 × 98 =
27. 27.101 × 104 =
28. 28.85 × 87 =
29. 29.8 × 7 =
30. 30.115 × 85 =
31. 31.107 × 98 =
32. 32.103 × 95 =
33. 33.96 × 90 =
34. 34.114 × 101 =
35. 35.6 × 6 =
36. 36.102 × 115 =
37. 37.114 × 103 =
38. 38.99 × 99 =
39. 39.11 × 6 =
40. 40.109 × 90 =

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