Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 864 · 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. 1.8 × 9 =
2. 2.107 × 110 =
3. 3.89 × 97 =
4. 4.102 × 90 =
5. 5.96 × 85 =
6. 6.8 × 7 =
7. 7.106 × 90 =
8. 8.961 × 963 =
9. 9.8 × 9 =
10. 10.115 × 111 =
11. 11.998 × 977 =
12. 12.95 × 99 =
13. 13.961 × 999 =
14. 14.7 × 7 =
15. 15.105 × 102 =
16. 16.8 × 7 =
17. 17.88 × 95 =
18. 18.112 × 87 =
19. 19.105 × 91 =
20. 20.980 × 979 =
21. 21.977 × 999 =
22. 22.993 × 993 =
23. 23.7 × 7 =
24. 24.11 × 11 =
25. 25.7 × 9 =
26. 26.7 × 7 =
27. 27.101 × 90 =
28. 28.113 × 110 =
29. 29.103 × 115 =
30. 30.7 × 6 =
31. 31.106 × 102 =
32. 32.105 × 107 =
33. 33.12 × 7 =
34. 34.89 × 94 =
35. 35.111 × 87 =
36. 36.104 × 113 =
37. 37.13 × 14 =
38. 38.111 × 104 =
39. 39.97 × 86 =
40. 40.999 × 963 =

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