Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 897 · 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. 1.91 × 91 =
2. 2.102 × 106 =
3. 3.6 × 9 =
4. 4.93 × 90 =
5. 5.104 × 101 =
6. 6.14 × 12 =
7. 7.972 × 991 =
8. 8.8 × 9 =
9. 9.1031 × 1034 =
10. 10.103 × 113 =
11. 11.998 × 979 =
12. 12.13 × 14 =
13. 13.107 × 96 =
14. 14.9 × 7 =
15. 15.9 × 7 =
16. 16.11 × 8 =
17. 17.1005 × 997 =
18. 18.99 × 99 =
19. 19.113 × 99 =
20. 20.104 × 85 =
21. 21.963 × 987 =
22. 22.7 × 7 =
23. 23.114 × 93 =
24. 24.11 × 14 =
25. 25.93 × 96 =
26. 26.99 × 97 =
27. 27.114 × 101 =
28. 28.91 × 85 =
29. 29.98 × 89 =
30. 30.6 × 9 =
31. 31.91 × 99 =
32. 32.86 × 87 =
33. 33.109 × 89 =
34. 34.14 × 7 =
35. 35.89 × 93 =
36. 36.90 × 88 =
37. 37.107 × 103 =
38. 38.98 × 92 =
39. 39.8 × 7 =
40. 40.6 × 6 =

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