Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 722 · 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. 2.110 × 102 =
3. 3.110 × 93 =
4. 4.104 × 105 =
5. 5.98 × 86 =
6. 6.102 × 89 =
7. 7.1037 × 1005 =
8. 8.8 × 8 =
9. 9.95 × 98 =
10. 10.1014 × 1014 =
11. 11.1004 × 1006 =
12. 12.962 × 998 =
13. 13.962 × 974 =
14. 14.8 × 9 =
15. 15.9 × 7 =
16. 16.9 × 9 =
17. 17.94 × 90 =
18. 18.98 × 91 =
19. 19.112 × 98 =
20. 20.13 × 13 =
21. 21.9 × 9 =
22. 22.107 × 102 =
23. 23.88 × 94 =
24. 24.93 × 94 =
25. 25.103 × 109 =
26. 26.13 × 7 =
27. 27.1030 × 1006 =
28. 28.11 × 13 =
29. 29.976 × 965 =
30. 30.91 × 95 =
31. 31.11 × 7 =
32. 32.1018 × 1023 =
33. 33.105 × 101 =
34. 34.110 × 85 =
35. 35.112 × 114 =
36. 36.98 × 93 =
37. 37.973 × 983 =
38. 38.12 × 12 =
39. 39.9 × 7 =
40. 40.6 × 9 =

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