Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 170 · 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. 1.112 × 101 =
2. 2.1031 × 1007 =
3. 3.6 × 9 =
4. 4.106 × 85 =
5. 5.98 × 95 =
6. 6.96 × 94 =
7. 7.9 × 8 =
8. 8.981 × 962 =
9. 9.101 × 113 =
10. 10.11 × 6 =
11. 11.105 × 103 =
12. 12.1012 × 1039 =
13. 13.1017 × 1020 =
14. 14.113 × 85 =
15. 15.99 × 92 =
16. 16.990 × 969 =
17. 17.102 × 94 =
18. 18.85 × 90 =
19. 19.96 × 86 =
20. 20.104 × 94 =
21. 21.11 × 13 =
22. 22.7 × 8 =
23. 23.111 × 85 =
24. 24.1030 × 1014 =
25. 25.1022 × 1015 =
26. 26.13 × 6 =
27. 27.12 × 6 =
28. 28.1038 × 1015 =
29. 29.86 × 94 =
30. 30.12 × 9 =
31. 31.99 × 94 =
32. 32.88 × 86 =
33. 33.1006 × 1034 =
34. 34.6 × 8 =
35. 35.90 × 95 =
36. 36.104 × 112 =
37. 37.85 × 97 =
38. 38.111 × 95 =
39. 39.14 × 8 =
40. 40.110 × 103 =

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