Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 611 · 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. 1.106 × 102 =
2. 2.104 × 104 =
3. 3.111 × 98 =
4. 4.11 × 11 =
5. 5.96 × 85 =
6. 6.99 × 97 =
7. 7.1013 × 960 =
8. 8.7 × 7 =
9. 9.979 × 997 =
10. 10.96 × 94 =
11. 11.12 × 7 =
12. 12.13 × 9 =
13. 13.1021 × 1010 =
14. 14.8 × 9 =
15. 15.14 × 7 =
16. 16.1029 × 1017 =
17. 17.86 × 87 =
18. 18.6 × 7 =
19. 19.107 × 96 =
20. 20.110 × 89 =
21. 21.99 × 93 =
22. 22.99 × 96 =
23. 23.113 × 104 =
24. 24.95 × 88 =
25. 25.106 × 98 =
26. 26.14 × 12 =
27. 27.7 × 9 =
28. 28.102 × 96 =
29. 29.104 × 115 =
30. 30.1028 × 986 =
31. 31.94 × 88 =
32. 32.14 × 8 =
33. 33.996 × 984 =
34. 34.94 × 91 =
35. 35.11 × 11 =
36. 36.13 × 11 =
37. 37.8 × 8 =
38. 38.98 × 91 =
39. 39.105 × 110 =
40. 40.973 × 996 =

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