Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 510 · 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. 1.985 × 961 =
2. 2.92 × 98 =
3. 3.13 × 11 =
4. 4.12 × 13 =
5. 5.1015 × 1014 =
6. 6.13 × 13 =
7. 7.12 × 11 =
8. 8.107 × 114 =
9. 9.108 × 105 =
10. 10.13 × 14 =
11. 11.103 × 114 =
12. 12.6 × 6 =
13. 13.11 × 13 =
14. 14.7 × 9 =
15. 15.982 × 982 =
16. 16.11 × 11 =
17. 17.1006 × 982 =
18. 18.14 × 13 =
19. 19.11 × 6 =
20. 20.14 × 12 =
21. 21.114 × 94 =
22. 22.1017 × 968 =
23. 23.7 × 9 =
24. 24.107 × 102 =
25. 25.92 × 92 =
26. 26.8 × 8 =
27. 27.1029 × 1012 =
28. 28.112 × 106 =
29. 29.1017 × 987 =
30. 30.102 × 107 =
31. 31.114 × 105 =
32. 32.88 × 87 =
33. 33.981 × 964 =
34. 34.1026 × 1014 =
35. 35.101 × 98 =
36. 36.111 × 103 =
37. 37.105 × 96 =
38. 38.7 × 8 =
39. 39.86 × 85 =
40. 40.12 × 9 =

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