Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 377 · 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. 1.98 × 87 =
2. 2.8 × 9 =
3. 3.13 × 11 =
4. 4.1005 × 993 =
5. 5.964 × 994 =
6. 6.1012 × 1005 =
7. 7.102 × 88 =
8. 8.14 × 11 =
9. 9.90 × 98 =
10. 10.9 × 9 =
11. 11.106 × 106 =
12. 12.94 × 99 =
13. 13.90 × 89 =
14. 14.14 × 7 =
15. 15.13 × 14 =
16. 16.101 × 111 =
17. 17.8 × 7 =
18. 18.1011 × 991 =
19. 19.9 × 6 =
20. 20.11 × 7 =
21. 21.110 × 87 =
22. 22.11 × 13 =
23. 23.101 × 109 =
24. 24.113 × 105 =
25. 25.1008 × 991 =
26. 26.91 × 85 =
27. 27.963 × 960 =
28. 28.986 × 990 =
29. 29.110 × 109 =
30. 30.7 × 8 =
31. 31.104 × 107 =
32. 32.95 × 88 =
33. 33.87 × 88 =
34. 34.111 × 106 =
35. 35.1028 × 981 =
36. 36.975 × 995 =
37. 37.1002 × 1033 =
38. 38.101 × 86 =
39. 39.98 × 87 =
40. 40.85 × 87 =

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