Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 451 · 40 sums

The trick (Ekanyunena Purvena): Write the number with as many digits as there are nines (add zeros in front if needed). Left part: the number minus 1. Right part: “all from 9 and the last from 10” of the number. More digits than the nines (237 × 99)? Split off as many digits as there are nines (2 | 37): left = number − (front part + 1) = 234, right = complement of 37 = 63 → 23463.

1. 1.15 × 99 =
2. 2.92 × 99 =
3. 3.5 × 9 =
4. 4.206 × 9 =
5. 5.47 × 99 =
6. 6.2087 × 99 =
7. 7.91 × 99 =
8. 8.62 × 99 =
9. 9.603 × 999 =
10. 10.219 × 999 =
11. 11.122 × 999 =
12. 12.893 × 999 =
13. 13.86 × 99 =
14. 14.278 × 999 =
15. 15.1109 × 99 =
16. 16.741 × 999 =
17. 17.1472 × 99 =
18. 18.4 × 9 =
19. 19.746 × 999 =
20. 20.4 × 9 =
21. 21.8 × 9 =
22. 22.95 × 9 =
23. 23.87 × 99 =
24. 24.7 × 99 =
25. 25.83 × 99 =
26. 26.3 × 9 =
27. 27.112 × 9 =
28. 28.449 × 999 =
29. 29.2 × 99 =
30. 30.1239 × 99 =
31. 31.26 × 99 =
32. 32.96 × 99 =
33. 33.9107 × 999 =
34. 34.55 × 9 =
35. 35.5 × 9 =
36. 36.68 × 99 =
37. 37.8 × 9 =
38. 38.834 × 999 =
39. 39.57 × 9 =
40. 40.2172 × 999 =

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