Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 435 · 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. 1.12 × 7 =
2. 2.109 × 112 =
3. 3.99 × 87 =
4. 4.106 × 104 =
5. 5.13 × 11 =
6. 6.6 × 7 =
7. 7.90 × 91 =
8. 8.14 × 7 =
9. 9.101 × 90 =
10. 10.98 × 85 =
11. 11.99 × 92 =
12. 12.110 × 108 =
13. 13.11 × 8 =
14. 14.9 × 7 =
15. 15.104 × 102 =
16. 16.7 × 7 =
17. 17.12 × 12 =
18. 18.1022 × 981 =
19. 19.997 × 992 =
20. 20.11 × 13 =
21. 21.1011 × 1015 =
22. 22.95 × 89 =
23. 23.11 × 6 =
24. 24.1003 × 968 =
25. 25.975 × 988 =
26. 26.13 × 13 =
27. 27.11 × 11 =
28. 28.1032 × 1019 =
29. 29.113 × 99 =
30. 30.109 × 101 =
31. 31.11 × 11 =
32. 32.11 × 7 =
33. 33.85 × 90 =
34. 34.13 × 11 =
35. 35.115 × 114 =
36. 36.961 × 978 =
37. 37.113 × 102 =
38. 38.101 × 92 =
39. 39.110 × 85 =
40. 40.13 × 9 =

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