Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 104 · 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. 1.1015 × 1001 =
2. 2.111 × 98 =
3. 3.11 × 13 =
4. 4.13 × 13 =
5. 5.90 × 90 =
6. 6.90 × 91 =
7. 7.97 × 98 =
8. 8.995 × 969 =
9. 9.14 × 14 =
10. 10.114 × 110 =
11. 11.115 × 89 =
12. 12.109 × 89 =
13. 13.101 × 102 =
14. 14.985 × 976 =
15. 15.107 × 109 =
16. 16.97 × 99 =
17. 17.96 × 99 =
18. 18.101 × 107 =
19. 19.90 × 85 =
20. 20.9 × 8 =
21. 21.986 × 996 =
22. 22.1022 × 994 =
23. 23.9 × 9 =
24. 24.98 × 88 =
25. 25.11 × 11 =
26. 26.9 × 8 =
27. 27.109 × 97 =
28. 28.8 × 7 =
29. 29.111 × 93 =
30. 30.104 × 109 =
31. 31.112 × 107 =
32. 32.88 × 87 =
33. 33.88 × 88 =
34. 34.99 × 93 =
35. 35.89 × 98 =
36. 36.1028 × 1012 =
37. 37.90 × 88 =
38. 38.107 × 103 =
39. 39.115 × 101 =
40. 40.12 × 11 =

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