Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 409 · 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. 1.1036 × 1010 =
2. 2.13 × 13 =
3. 3.107 × 107 =
4. 4.95 × 86 =
5. 5.1025 × 996 =
6. 6.85 × 85 =
7. 7.14 × 11 =
8. 8.98 × 88 =
9. 9.115 × 101 =
10. 10.6 × 6 =
11. 11.98 × 91 =
12. 12.106 × 88 =
13. 13.1025 × 992 =
14. 14.101 × 102 =
15. 15.12 × 12 =
16. 16.88 × 86 =
17. 17.972 × 978 =
18. 18.12 × 14 =
19. 19.8 × 9 =
20. 20.11 × 11 =
21. 21.13 × 13 =
22. 22.985 × 964 =
23. 23.114 × 107 =
24. 24.87 × 98 =
25. 25.13 × 12 =
26. 26.7 × 9 =
27. 27.960 × 997 =
28. 28.1028 × 1038 =
29. 29.96 × 85 =
30. 30.1021 × 1035 =
31. 31.108 × 115 =
32. 32.7 × 7 =
33. 33.7 × 8 =
34. 34.6 × 6 =
35. 35.7 × 9 =
36. 36.111 × 97 =
37. 37.87 × 89 =
38. 38.101 × 95 =
39. 39.87 × 96 =
40. 40.88 × 87 =

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