Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 428 · 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. 1.12 × 8 =
2. 2.12 × 12 =
3. 3.11 × 7 =
4. 4.89 × 94 =
5. 5.13 × 6 =
6. 6.962 × 991 =
7. 7.12 × 11 =
8. 8.990 × 960 =
9. 9.14 × 8 =
10. 10.14 × 8 =
11. 11.14 × 9 =
12. 12.105 × 94 =
13. 13.9 × 9 =
14. 14.11 × 12 =
15. 15.98 × 87 =
16. 16.9 × 8 =
17. 17.91 × 86 =
18. 18.113 × 92 =
19. 19.101 × 85 =
20. 20.6 × 9 =
21. 21.99 × 97 =
22. 22.95 × 95 =
23. 23.90 × 91 =
24. 24.111 × 96 =
25. 25.1004 × 1005 =
26. 26.91 × 85 =
27. 27.14 × 9 =
28. 28.13 × 7 =
29. 29.103 × 88 =
30. 30.1033 × 1003 =
31. 31.111 × 90 =
32. 32.105 × 110 =
33. 33.105 × 115 =
34. 34.1022 × 990 =
35. 35.103 × 113 =
36. 36.8 × 8 =
37. 37.7 × 7 =
38. 38.88 × 98 =
39. 39.1003 × 1010 =
40. 40.110 × 109 =

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