Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 407 · 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. 1.997 × 968 =
2. 2.1037 × 1037 =
3. 3.91 × 88 =
4. 4.103 × 110 =
5. 5.107 × 102 =
6. 6.8 × 9 =
7. 7.108 × 101 =
8. 8.1003 × 1019 =
9. 9.961 × 976 =
10. 10.109 × 110 =
11. 11.11 × 11 =
12. 12.114 × 109 =
13. 13.114 × 111 =
14. 14.87 × 91 =
15. 15.85 × 85 =
16. 16.114 × 86 =
17. 17.1037 × 985 =
18. 18.1032 × 1005 =
19. 19.109 × 104 =
20. 20.91 × 96 =
21. 21.99 × 97 =
22. 22.108 × 104 =
23. 23.12 × 11 =
24. 24.7 × 8 =
25. 25.14 × 8 =
26. 26.107 × 98 =
27. 27.93 × 91 =
28. 28.9 × 8 =
29. 29.7 × 9 =
30. 30.91 × 90 =
31. 31.95 × 96 =
32. 32.109 × 110 =
33. 33.990 × 999 =
34. 34.106 × 89 =
35. 35.8 × 9 =
36. 36.982 × 996 =
37. 37.101 × 96 =
38. 38.979 × 991 =
39. 39.7 × 9 =
40. 40.1022 × 1027 =

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