Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 644 · 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. 1.103 × 109 =
2. 2.89 × 96 =
3. 3.13 × 9 =
4. 4.101 × 114 =
5. 5.13 × 8 =
6. 6.90 × 93 =
7. 7.92 × 94 =
8. 8.1010 × 1009 =
9. 9.981 × 994 =
10. 10.103 × 98 =
11. 11.104 × 101 =
12. 12.14 × 14 =
13. 13.14 × 12 =
14. 14.101 × 112 =
15. 15.8 × 8 =
16. 16.109 × 115 =
17. 17.11 × 14 =
18. 18.987 × 967 =
19. 19.1005 × 1015 =
20. 20.112 × 108 =
21. 21.11 × 11 =
22. 22.107 × 101 =
23. 23.92 × 97 =
24. 24.96 × 87 =
25. 25.107 × 97 =
26. 26.14 × 13 =
27. 27.115 × 88 =
28. 28.115 × 92 =
29. 29.108 × 107 =
30. 30.115 × 101 =
31. 31.1003 × 1040 =
32. 32.9 × 8 =
33. 33.14 × 12 =
34. 34.104 × 101 =
35. 35.114 × 112 =
36. 36.1027 × 960 =
37. 37.111 × 92 =
38. 38.1001 × 991 =
39. 39.110 × 106 =
40. 40.1005 × 1027 =

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