Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 987 · 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. 1.98 × 99 =
2. 2.111 × 99 =
3. 3.96 × 86 =
4. 4.11 × 7 =
5. 5.88 × 94 =
6. 6.109 × 86 =
7. 7.97 × 88 =
8. 8.8 × 8 =
9. 9.13 × 9 =
10. 10.114 × 85 =
11. 11.961 × 961 =
12. 12.91 × 91 =
13. 13.1011 × 1029 =
14. 14.105 × 85 =
15. 15.975 × 991 =
16. 16.982 × 967 =
17. 17.993 × 966 =
18. 18.101 × 105 =
19. 19.12 × 14 =
20. 20.92 × 95 =
21. 21.105 × 95 =
22. 22.98 × 92 =
23. 23.999 × 988 =
24. 24.101 × 90 =
25. 25.105 × 106 =
26. 26.99 × 97 =
27. 27.106 × 108 =
28. 28.11 × 12 =
29. 29.96 × 94 =
30. 30.7 × 9 =
31. 31.1014 × 1001 =
32. 32.9 × 9 =
33. 33.14 × 13 =
34. 34.97 × 90 =
35. 35.11 × 8 =
36. 36.9 × 7 =
37. 37.107 × 97 =
38. 38.95 × 87 =
39. 39.7 × 7 =
40. 40.11 × 12 =

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