Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 305 · 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. 1.88 × 96 =
2. 2.99 × 89 =
3. 3.12 × 7 =
4. 4.9 × 9 =
5. 5.1040 × 1010 =
6. 6.1011 × 1009 =
7. 7.11 × 7 =
8. 8.971 × 969 =
9. 9.99 × 88 =
10. 10.95 × 99 =
11. 11.103 × 111 =
12. 12.105 × 105 =
13. 13.102 × 115 =
14. 14.7 × 8 =
15. 15.112 × 92 =
16. 16.12 × 8 =
17. 17.962 × 979 =
18. 18.1024 × 1026 =
19. 19.85 × 99 =
20. 20.14 × 13 =
21. 21.105 × 111 =
22. 22.13 × 9 =
23. 23.12 × 8 =
24. 24.12 × 12 =
25. 25.6 × 6 =
26. 26.104 × 96 =
27. 27.92 × 86 =
28. 28.89 × 99 =
29. 29.101 × 101 =
30. 30.115 × 104 =
31. 31.101 × 115 =
32. 32.12 × 6 =
33. 33.85 × 98 =
34. 34.109 × 98 =
35. 35.90 × 92 =
36. 36.90 × 97 =
37. 37.105 × 104 =
38. 38.11 × 11 =
39. 39.105 × 93 =
40. 40.90 × 93 =

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