Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 771 · 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. 1.1040 × 1006 =
2. 2.1028 × 1030 =
3. 3.11 × 11 =
4. 4.85 × 88 =
5. 5.7 × 7 =
6. 6.14 × 11 =
7. 7.14 × 7 =
8. 8.90 × 98 =
9. 9.14 × 14 =
10. 10.103 × 93 =
11. 11.103 × 90 =
12. 12.14 × 9 =
13. 13.110 × 108 =
14. 14.8 × 7 =
15. 15.104 × 106 =
16. 16.1031 × 1031 =
17. 17.96 × 87 =
18. 18.1034 × 965 =
19. 19.976 × 970 =
20. 20.104 × 98 =
21. 21.978 × 962 =
22. 22.110 × 107 =
23. 23.6 × 6 =
24. 24.85 × 92 =
25. 25.14 × 12 =
26. 26.14 × 14 =
27. 27.108 × 110 =
28. 28.1040 × 987 =
29. 29.90 × 92 =
30. 30.7 × 9 =
31. 31.108 × 104 =
32. 32.109 × 107 =
33. 33.114 × 114 =
34. 34.103 × 101 =
35. 35.14 × 13 =
36. 36.13 × 6 =
37. 37.114 × 98 =
38. 38.103 × 88 =
39. 39.113 × 91 =
40. 40.7 × 7 =

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