Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 71 · 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. 1.14 × 14 =
2. 2.1015 × 1007 =
3. 3.97 × 97 =
4. 4.101 × 101 =
5. 5.14 × 11 =
6. 6.9 × 9 =
7. 7.103 × 93 =
8. 8.91 × 88 =
9. 9.11 × 14 =
10. 10.108 × 99 =
11. 11.91 × 95 =
12. 12.99 × 95 =
13. 13.104 × 101 =
14. 14.99 × 91 =
15. 15.8 × 9 =
16. 16.90 × 94 =
17. 17.964 × 999 =
18. 18.101 × 102 =
19. 19.14 × 14 =
20. 20.111 × 86 =
21. 21.115 × 98 =
22. 22.114 × 101 =
23. 23.91 × 92 =
24. 24.14 × 9 =
25. 25.113 × 110 =
26. 26.106 × 92 =
27. 27.95 × 91 =
28. 28.12 × 8 =
29. 29.8 × 9 =
30. 30.90 × 89 =
31. 31.966 × 977 =
32. 32.11 × 11 =
33. 33.14 × 13 =
34. 34.1004 × 1020 =
35. 35.9 × 7 =
36. 36.12 × 14 =
37. 37.1002 × 1030 =
38. 38.90 × 99 =
39. 39.12 × 11 =
40. 40.96 × 94 =

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