Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 788 · 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. 1.113 × 85 =
2. 2.9 × 7 =
3. 3.971 × 986 =
4. 4.101 × 107 =
5. 5.1034 × 964 =
6. 6.11 × 9 =
7. 7.8 × 7 =
8. 8.96 × 91 =
9. 9.11 × 11 =
10. 10.111 × 92 =
11. 11.1010 × 982 =
12. 12.963 × 977 =
13. 13.97 × 86 =
14. 14.91 × 85 =
15. 15.984 × 977 =
16. 16.104 × 105 =
17. 17.7 × 9 =
18. 18.8 × 7 =
19. 19.1019 × 1018 =
20. 20.101 × 107 =
21. 21.92 × 96 =
22. 22.994 × 974 =
23. 23.107 × 97 =
24. 24.9 × 8 =
25. 25.1020 × 981 =
26. 26.1020 × 1002 =
27. 27.102 × 107 =
28. 28.115 × 87 =
29. 29.86 × 91 =
30. 30.9 × 8 =
31. 31.90 × 86 =
32. 32.14 × 13 =
33. 33.110 × 105 =
34. 34.99 × 86 =
35. 35.6 × 8 =
36. 36.86 × 85 =
37. 37.98 × 90 =
38. 38.9 × 9 =
39. 39.9 × 7 =
40. 40.92 × 94 =

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