Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 173 · 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. 1.102 × 115 =
2. 2.104 × 96 =
3. 3.114 × 101 =
4. 4.11 × 12 =
5. 5.92 × 85 =
6. 6.13 × 11 =
7. 7.996 × 976 =
8. 8.7 × 9 =
9. 9.6 × 7 =
10. 10.1028 × 1036 =
11. 11.110 × 109 =
12. 12.104 × 87 =
13. 13.90 × 93 =
14. 14.968 × 992 =
15. 15.96 × 95 =
16. 16.984 × 970 =
17. 17.1007 × 1002 =
18. 18.14 × 8 =
19. 19.107 × 86 =
20. 20.7 × 8 =
21. 21.9 × 6 =
22. 22.1009 × 997 =
23. 23.1030 × 1006 =
24. 24.106 × 104 =
25. 25.112 × 89 =
26. 26.99 × 97 =
27. 27.1023 × 983 =
28. 28.97 × 85 =
29. 29.102 × 113 =
30. 30.1032 × 968 =
31. 31.86 × 85 =
32. 32.98 × 93 =
33. 33.14 × 12 =
34. 34.7 × 9 =
35. 35.14 × 8 =
36. 36.987 × 964 =
37. 37.8 × 7 =
38. 38.110 × 90 =
39. 39.103 × 109 =
40. 40.1026 × 962 =

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