Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 677 · 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. 1.105 × 102 =
2. 2.13 × 6 =
3. 3.1018 × 991 =
4. 4.96 × 85 =
5. 5.12 × 13 =
6. 6.109 × 92 =
7. 7.8 × 8 =
8. 8.109 × 98 =
9. 9.112 × 92 =
10. 10.109 × 106 =
11. 11.1017 × 1005 =
12. 12.88 × 89 =
13. 13.9 × 9 =
14. 14.1039 × 1015 =
15. 15.12 × 8 =
16. 16.985 × 996 =
17. 17.114 × 102 =
18. 18.13 × 13 =
19. 19.8 × 8 =
20. 20.102 × 97 =
21. 21.14 × 13 =
22. 22.113 × 110 =
23. 23.85 × 96 =
24. 24.11 × 12 =
25. 25.1005 × 980 =
26. 26.12 × 7 =
27. 27.104 × 111 =
28. 28.110 × 88 =
29. 29.13 × 7 =
30. 30.105 × 87 =
31. 31.110 × 112 =
32. 32.102 × 114 =
33. 33.111 × 103 =
34. 34.96 × 99 =
35. 35.103 × 90 =
36. 36.107 × 89 =
37. 37.114 × 113 =
38. 38.86 × 98 =
39. 39.9 × 9 =
40. 40.14 × 8 =

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