Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 515 · 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 × 12 =
2. 2.1020 × 974 =
3. 3.1034 × 961 =
4. 4.114 × 95 =
5. 5.111 × 104 =
6. 6.105 × 107 =
7. 7.97 × 89 =
8. 8.111 × 87 =
9. 9.86 × 99 =
10. 10.1030 × 1020 =
11. 11.114 × 101 =
12. 12.13 × 11 =
13. 13.105 × 101 =
14. 14.98 × 98 =
15. 15.101 × 103 =
16. 16.12 × 6 =
17. 17.12 × 7 =
18. 18.7 × 9 =
19. 19.102 × 105 =
20. 20.11 × 11 =
21. 21.101 × 105 =
22. 22.98 × 99 =
23. 23.8 × 7 =
24. 24.97 × 87 =
25. 25.8 × 7 =
26. 26.1022 × 977 =
27. 27.11 × 13 =
28. 28.1007 × 1037 =
29. 29.90 × 94 =
30. 30.991 × 963 =
31. 31.12 × 6 =
32. 32.103 × 111 =
33. 33.101 × 112 =
34. 34.109 × 91 =
35. 35.107 × 112 =
36. 36.103 × 103 =
37. 37.85 × 99 =
38. 38.12 × 14 =
39. 39.88 × 88 =
40. 40.99 × 92 =

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