Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 800 · 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. 1.89 × 92 =
2. 2.85 × 93 =
3. 3.88 × 97 =
4. 4.110 × 114 =
5. 5.108 × 106 =
6. 6.85 × 85 =
7. 7.103 × 111 =
8. 8.14 × 11 =
9. 9.102 × 89 =
10. 10.1012 × 1023 =
11. 11.1029 × 1008 =
12. 12.109 × 112 =
13. 13.115 × 86 =
14. 14.976 × 967 =
15. 15.12 × 11 =
16. 16.114 × 105 =
17. 17.1023 × 1003 =
18. 18.96 × 89 =
19. 19.104 × 88 =
20. 20.14 × 13 =
21. 21.87 × 91 =
22. 22.1006 × 1015 =
23. 23.6 × 8 =
24. 24.6 × 9 =
25. 25.113 × 110 =
26. 26.1024 × 991 =
27. 27.111 × 93 =
28. 28.103 × 107 =
29. 29.102 × 107 =
30. 30.102 × 105 =
31. 31.85 × 99 =
32. 32.88 × 96 =
33. 33.8 × 9 =
34. 34.88 × 95 =
35. 35.14 × 14 =
36. 36.98 × 89 =
37. 37.13 × 12 =
38. 38.104 × 85 =
39. 39.989 × 974 =
40. 40.12 × 14 =

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