Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 97 · 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. 1.11 × 9 =
2. 2.104 × 104 =
3. 3.91 × 86 =
4. 4.8 × 7 =
5. 5.99 × 86 =
6. 6.1020 × 1038 =
7. 7.9 × 8 =
8. 8.11 × 12 =
9. 9.88 × 95 =
10. 10.13 × 6 =
11. 11.106 × 110 =
12. 12.106 × 114 =
13. 13.14 × 8 =
14. 14.93 × 91 =
15. 15.111 × 109 =
16. 16.6 × 8 =
17. 17.6 × 9 =
18. 18.1018 × 1014 =
19. 19.978 × 967 =
20. 20.105 × 102 =
21. 21.11 × 11 =
22. 22.7 × 6 =
23. 23.110 × 104 =
24. 24.13 × 6 =
25. 25.106 × 115 =
26. 26.978 × 961 =
27. 27.9 × 8 =
28. 28.108 × 87 =
29. 29.13 × 9 =
30. 30.9 × 7 =
31. 31.979 × 971 =
32. 32.103 × 104 =
33. 33.88 × 93 =
34. 34.96 × 89 =
35. 35.11 × 9 =
36. 36.106 × 88 =
37. 37.14 × 8 =
38. 38.7 × 8 =
39. 39.6 × 6 =
40. 40.1039 × 973 =

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