Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 940 · 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. 1.104 × 102 =
2. 2.971 × 986 =
3. 3.109 × 105 =
4. 4.9 × 6 =
5. 5.95 × 85 =
6. 6.13 × 11 =
7. 7.95 × 98 =
8. 8.111 × 87 =
9. 9.90 × 93 =
10. 10.88 × 89 =
11. 11.973 × 997 =
12. 12.109 × 102 =
13. 13.101 × 95 =
14. 14.1010 × 963 =
15. 15.1036 × 983 =
16. 16.87 × 93 =
17. 17.979 × 977 =
18. 18.1018 × 1024 =
19. 19.8 × 6 =
20. 20.112 × 90 =
21. 21.103 × 97 =
22. 22.14 × 13 =
23. 23.91 × 92 =
24. 24.109 × 106 =
25. 25.12 × 9 =
26. 26.112 × 107 =
27. 27.90 × 92 =
28. 28.1029 × 963 =
29. 29.105 × 92 =
30. 30.97 × 86 =
31. 31.106 × 89 =
32. 32.1022 × 1025 =
33. 33.89 × 99 =
34. 34.9 × 9 =
35. 35.1029 × 979 =
36. 36.11 × 13 =
37. 37.6 × 9 =
38. 38.14 × 7 =
39. 39.971 × 972 =
40. 40.99 × 98 =

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