Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 707 · 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. 1.1004 × 1019 =
2. 2.93 × 95 =
3. 3.13 × 11 =
4. 4.113 × 91 =
5. 5.12 × 11 =
6. 6.12 × 11 =
7. 7.9 × 8 =
8. 8.1024 × 992 =
9. 9.107 × 94 =
10. 10.88 × 90 =
11. 11.991 × 993 =
12. 12.108 × 94 =
13. 13.7 × 8 =
14. 14.13 × 11 =
15. 15.11 × 8 =
16. 16.13 × 11 =
17. 17.105 × 86 =
18. 18.13 × 13 =
19. 19.9 × 6 =
20. 20.108 × 99 =
21. 21.1002 × 1033 =
22. 22.7 × 7 =
23. 23.114 × 95 =
24. 24.113 × 87 =
25. 25.96 × 88 =
26. 26.984 × 963 =
27. 27.92 × 92 =
28. 28.95 × 99 =
29. 29.87 × 98 =
30. 30.1007 × 985 =
31. 31.96 × 88 =
32. 32.105 × 110 =
33. 33.110 × 96 =
34. 34.962 × 965 =
35. 35.995 × 971 =
36. 36.963 × 987 =
37. 37.996 × 970 =
38. 38.9 × 9 =
39. 39.114 × 89 =
40. 40.11 × 11 =

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