Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 851 · 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. 1.13 × 13 =
2. 2.9 × 9 =
3. 3.105 × 104 =
4. 4.110 × 111 =
5. 5.9 × 9 =
6. 6.8 × 8 =
7. 7.1031 × 1029 =
8. 8.98 × 98 =
9. 9.112 × 103 =
10. 10.8 × 9 =
11. 11.1015 × 1010 =
12. 12.87 × 98 =
13. 13.86 × 95 =
14. 14.8 × 8 =
15. 15.94 × 98 =
16. 16.107 × 112 =
17. 17.985 × 983 =
18. 18.977 × 990 =
19. 19.1015 × 985 =
20. 20.114 × 114 =
21. 21.109 × 102 =
22. 22.978 × 998 =
23. 23.113 × 98 =
24. 24.109 × 111 =
25. 25.115 × 115 =
26. 26.92 × 92 =
27. 27.93 × 89 =
28. 28.8 × 9 =
29. 29.1007 × 976 =
30. 30.12 × 9 =
31. 31.983 × 964 =
32. 32.14 × 7 =
33. 33.14 × 14 =
34. 34.7 × 9 =
35. 35.112 × 103 =
36. 36.104 × 113 =
37. 37.101 × 86 =
38. 38.86 × 87 =
39. 39.12 × 14 =
40. 40.14 × 12 =

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