Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 721 · 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. 1.1003 × 1011 =
2. 2.7 × 6 =
3. 3.7 × 7 =
4. 4.11 × 11 =
5. 5.85 × 99 =
6. 6.102 × 104 =
7. 7.968 × 995 =
8. 8.9 × 9 =
9. 9.98 × 96 =
10. 10.111 × 110 =
11. 11.14 × 11 =
12. 12.93 × 93 =
13. 13.968 × 985 =
14. 14.115 × 87 =
15. 15.12 × 14 =
16. 16.8 × 8 =
17. 17.8 × 9 =
18. 18.111 × 114 =
19. 19.92 × 92 =
20. 20.106 × 106 =
21. 21.115 × 110 =
22. 22.99 × 98 =
23. 23.9 × 6 =
24. 24.114 × 111 =
25. 25.102 × 94 =
26. 26.113 × 93 =
27. 27.88 × 99 =
28. 28.111 × 95 =
29. 29.105 × 112 =
30. 30.94 × 91 =
31. 31.94 × 93 =
32. 32.98 × 99 =
33. 33.8 × 7 =
34. 34.11 × 11 =
35. 35.106 × 103 =
36. 36.104 × 108 =
37. 37.14 × 9 =
38. 38.1004 × 1004 =
39. 39.9 × 6 =
40. 40.1015 × 998 =

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