Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 9 · 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. 1.101 × 89 =
2. 2.115 × 109 =
3. 3.85 × 88 =
4. 4.115 × 99 =
5. 5.112 × 103 =
6. 6.11 × 11 =
7. 7.95 × 91 =
8. 8.112 × 115 =
9. 9.12 × 7 =
10. 10.111 × 94 =
11. 11.106 × 104 =
12. 12.92 × 85 =
13. 13.113 × 94 =
14. 14.99 × 99 =
15. 15.87 × 99 =
16. 16.102 × 89 =
17. 17.984 × 970 =
18. 18.11 × 11 =
19. 19.1018 × 967 =
20. 20.103 × 104 =
21. 21.89 × 97 =
22. 22.92 × 94 =
23. 23.88 × 98 =
24. 24.109 × 105 =
25. 25.965 × 991 =
26. 26.13 × 7 =
27. 27.12 × 6 =
28. 28.9 × 8 =
29. 29.995 × 978 =
30. 30.86 × 91 =
31. 31.9 × 9 =
32. 32.9 × 7 =
33. 33.1032 × 1006 =
34. 34.113 × 111 =
35. 35.95 × 96 =
36. 36.105 × 114 =
37. 37.965 × 978 =
38. 38.98 × 85 =
39. 39.106 × 114 =
40. 40.11 × 6 =

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