Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 361 · 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 × 1025 =
2. 2.95 × 92 =
3. 3.1030 × 1040 =
4. 4.1006 × 977 =
5. 5.88 × 86 =
6. 6.9 × 7 =
7. 7.1018 × 1039 =
8. 8.107 × 111 =
9. 9.7 × 9 =
10. 10.1036 × 1011 =
11. 11.92 × 95 =
12. 12.8 × 6 =
13. 13.97 × 95 =
14. 14.112 × 101 =
15. 15.103 × 105 =
16. 16.1030 × 987 =
17. 17.8 × 6 =
18. 18.114 × 115 =
19. 19.112 × 115 =
20. 20.96 × 93 =
21. 21.14 × 13 =
22. 22.11 × 14 =
23. 23.1004 × 1036 =
24. 24.110 × 107 =
25. 25.111 × 96 =
26. 26.102 × 99 =
27. 27.113 × 104 =
28. 28.11 × 14 =
29. 29.109 × 87 =
30. 30.109 × 103 =
31. 31.98 × 97 =
32. 32.115 × 97 =
33. 33.98 × 87 =
34. 34.14 × 14 =
35. 35.14 × 6 =
36. 36.88 × 87 =
37. 37.1028 × 1009 =
38. 38.106 × 108 =
39. 39.8 × 8 =
40. 40.14 × 6 =

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