Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 19 · 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 × 11 =
2. 2.114 × 112 =
3. 3.974 × 989 =
4. 4.11 × 11 =
5. 5.86 × 98 =
6. 6.1010 × 1025 =
7. 7.102 × 102 =
8. 8.105 × 97 =
9. 9.14 × 14 =
10. 10.13 × 9 =
11. 11.96 × 85 =
12. 12.101 × 101 =
13. 13.85 × 92 =
14. 14.6 × 6 =
15. 15.93 × 99 =
16. 16.85 × 89 =
17. 17.998 × 982 =
18. 18.971 × 979 =
19. 19.11 × 6 =
20. 20.12 × 14 =
21. 21.1022 × 981 =
22. 22.12 × 12 =
23. 23.92 × 89 =
24. 24.989 × 990 =
25. 25.973 × 980 =
26. 26.12 × 6 =
27. 27.8 × 8 =
28. 28.102 × 94 =
29. 29.110 × 115 =
30. 30.105 × 95 =
31. 31.103 × 103 =
32. 32.114 × 86 =
33. 33.14 × 11 =
34. 34.14 × 11 =
35. 35.14 × 12 =
36. 36.93 × 96 =
37. 37.115 × 101 =
38. 38.112 × 102 =
39. 39.962 × 975 =
40. 40.12 × 14 =

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