Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 718 · 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. 1.8 × 7 =
2. 2.8 × 9 =
3. 3.1006 × 1008 =
4. 4.106 × 108 =
5. 5.89 × 93 =
6. 6.94 × 94 =
7. 7.97 × 93 =
8. 8.113 × 112 =
9. 9.104 × 110 =
10. 10.106 × 103 =
11. 11.106 × 102 =
12. 12.986 × 962 =
13. 13.11 × 13 =
14. 14.112 × 96 =
15. 15.87 × 98 =
16. 16.85 × 98 =
17. 17.101 × 91 =
18. 18.1040 × 1015 =
19. 19.94 × 95 =
20. 20.89 × 91 =
21. 21.11 × 9 =
22. 22.14 × 6 =
23. 23.1028 × 972 =
24. 24.85 × 88 =
25. 25.87 × 89 =
26. 26.91 × 98 =
27. 27.111 × 105 =
28. 28.6 × 9 =
29. 29.12 × 14 =
30. 30.11 × 6 =
31. 31.104 × 111 =
32. 32.13 × 11 =
33. 33.975 × 976 =
34. 34.95 × 88 =
35. 35.7 × 9 =
36. 36.95 × 99 =
37. 37.8 × 8 =
38. 38.111 × 106 =
39. 39.105 × 90 =
40. 40.1026 × 1013 =

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