Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 992 · 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 × 104 =
2. 2.94 × 91 =
3. 3.1026 × 1012 =
4. 4.1007 × 990 =
5. 5.103 × 102 =
6. 6.113 × 102 =
7. 7.88 × 90 =
8. 8.85 × 96 =
9. 9.12 × 12 =
10. 10.970 × 968 =
11. 11.108 × 115 =
12. 12.94 × 96 =
13. 13.9 × 7 =
14. 14.12 × 14 =
15. 15.98 × 88 =
16. 16.961 × 997 =
17. 17.11 × 9 =
18. 18.11 × 13 =
19. 19.102 × 114 =
20. 20.98 × 92 =
21. 21.87 × 98 =
22. 22.11 × 7 =
23. 23.105 × 97 =
24. 24.107 × 85 =
25. 25.96 × 94 =
26. 26.101 × 98 =
27. 27.114 × 87 =
28. 28.968 × 994 =
29. 29.9 × 8 =
30. 30.85 × 91 =
31. 31.1009 × 983 =
32. 32.11 × 13 =
33. 33.86 × 96 =
34. 34.13 × 8 =
35. 35.103 × 97 =
36. 36.90 × 93 =
37. 37.88 × 86 =
38. 38.9 × 6 =
39. 39.96 × 93 =
40. 40.109 × 110 =

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