Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 939 · 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. 1.6 × 9 =
2. 2.104 × 93 =
3. 3.6 × 6 =
4. 4.99 × 96 =
5. 5.105 × 109 =
6. 6.95 × 94 =
7. 7.97 × 85 =
8. 8.1010 × 993 =
9. 9.964 × 998 =
10. 10.976 × 990 =
11. 11.90 × 92 =
12. 12.99 × 87 =
13. 13.107 × 96 =
14. 14.6 × 7 =
15. 15.113 × 109 =
16. 16.1022 × 1027 =
17. 17.1009 × 992 =
18. 18.12 × 12 =
19. 19.97 × 91 =
20. 20.112 × 88 =
21. 21.12 × 7 =
22. 22.99 × 99 =
23. 23.14 × 11 =
24. 24.1006 × 1035 =
25. 25.1021 × 1008 =
26. 26.6 × 6 =
27. 27.14 × 14 =
28. 28.94 × 85 =
29. 29.12 × 13 =
30. 30.979 × 993 =
31. 31.90 × 88 =
32. 32.11 × 14 =
33. 33.112 × 110 =
34. 34.110 × 102 =
35. 35.99 × 97 =
36. 36.115 × 106 =
37. 37.6 × 9 =
38. 38.99 × 94 =
39. 39.1031 × 1023 =
40. 40.9 × 9 =

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