Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 303 · 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. 1.13 × 7 =
2. 2.115 × 101 =
3. 3.1029 × 1016 =
4. 4.89 × 92 =
5. 5.13 × 14 =
6. 6.964 × 971 =
7. 7.12 × 7 =
8. 8.11 × 7 =
9. 9.9 × 9 =
10. 10.92 × 98 =
11. 11.110 × 90 =
12. 12.12 × 11 =
13. 13.969 × 989 =
14. 14.7 × 8 =
15. 15.1026 × 1003 =
16. 16.109 × 104 =
17. 17.11 × 13 =
18. 18.7 × 6 =
19. 19.1021 × 970 =
20. 20.14 × 14 =
21. 21.92 × 86 =
22. 22.99 × 96 =
23. 23.8 × 6 =
24. 24.7 × 8 =
25. 25.7 × 9 =
26. 26.13 × 6 =
27. 27.90 × 89 =
28. 28.102 × 102 =
29. 29.104 × 104 =
30. 30.1012 × 974 =
31. 31.1016 × 1027 =
32. 32.114 × 92 =
33. 33.11 × 12 =
34. 34.106 × 112 =
35. 35.90 × 86 =
36. 36.88 × 95 =
37. 37.105 × 106 =
38. 38.99 × 88 =
39. 39.13 × 14 =
40. 40.93 × 91 =

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