Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 774 · 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. 1.8 × 9 =
2. 2.1008 × 966 =
3. 3.1017 × 1020 =
4. 4.6 × 6 =
5. 5.88 × 97 =
6. 6.112 × 104 =
7. 7.114 × 97 =
8. 8.1030 × 992 =
9. 9.103 × 86 =
10. 10.107 × 85 =
11. 11.96 × 99 =
12. 12.1032 × 988 =
13. 13.112 × 103 =
14. 14.998 × 973 =
15. 15.103 × 113 =
16. 16.11 × 9 =
17. 17.108 × 106 =
18. 18.1023 × 973 =
19. 19.1034 × 965 =
20. 20.105 × 106 =
21. 21.96 × 97 =
22. 22.1039 × 1039 =
23. 23.7 × 8 =
24. 24.13 × 7 =
25. 25.90 × 88 =
26. 26.89 × 88 =
27. 27.109 × 110 =
28. 28.109 × 98 =
29. 29.12 × 9 =
30. 30.103 × 114 =
31. 31.9 × 9 =
32. 32.89 × 87 =
33. 33.88 × 91 =
34. 34.97 × 97 =
35. 35.98 × 88 =
36. 36.8 × 8 =
37. 37.966 × 983 =
38. 38.7 × 9 =
39. 39.1022 × 1013 =
40. 40.101 × 103 =

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