Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 245 · 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. 1.7 × 7 =
2. 2.12 × 9 =
3. 3.992 × 995 =
4. 4.9 × 9 =
5. 5.112 × 107 =
6. 6.13 × 14 =
7. 7.13 × 11 =
8. 8.13 × 9 =
9. 9.96 × 93 =
10. 10.110 × 97 =
11. 11.110 × 101 =
12. 12.86 × 93 =
13. 13.1039 × 967 =
14. 14.6 × 9 =
15. 15.97 × 94 =
16. 16.1005 × 975 =
17. 17.108 × 109 =
18. 18.1029 × 1034 =
19. 19.101 × 111 =
20. 20.1020 × 998 =
21. 21.12 × 6 =
22. 22.1037 × 1033 =
23. 23.108 × 115 =
24. 24.9 × 9 =
25. 25.98 × 88 =
26. 26.1002 × 995 =
27. 27.112 × 106 =
28. 28.95 × 86 =
29. 29.108 × 108 =
30. 30.90 × 88 =
31. 31.1001 × 1016 =
32. 32.12 × 9 =
33. 33.998 × 995 =
34. 34.85 × 91 =
35. 35.86 × 89 =
36. 36.107 × 111 =
37. 37.6 × 7 =
38. 38.9 × 6 =
39. 39.6 × 9 =
40. 40.6 × 7 =

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