Multiply by 9 and 99 Worksheet

Vedic maths trick 11: Multiply by 9, 99 and 999 · Set 729 · 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. 1.5 × 9 =
2. 2.72 × 999 =
3. 3.29 × 99 =
4. 4.23 × 99 =
5. 5.5 × 9 =
6. 6.8 × 9 =
7. 7.68 × 99 =
8. 8.19 × 99 =
9. 9.731 × 999 =
10. 10.321 × 999 =
11. 11.33 × 99 =
12. 12.4 × 99 =
13. 13.5 × 9 =
14. 14.2 × 9 =
15. 15.837 × 999 =
16. 16.93 × 99 =
17. 17.2786 × 99 =
18. 18.2 × 9 =
19. 19.4 × 9 =
20. 20.365 × 999 =
21. 21.86 × 99 =
22. 22.3 × 9 =
23. 23.3 × 99 =
24. 24.3 × 9 =
25. 25.3467 × 999 =
26. 26.144 × 9 =
27. 27.3 × 9 =
28. 28.26044 × 999 =
29. 29.14012 × 999 =
30. 30.648 × 99 =
31. 31.22 × 9 =
32. 32.608 × 999 =
33. 33.199 × 9 =
34. 34.211 × 9 =
35. 35.28 × 99 =
36. 36.81 × 99 =
37. 37.88 × 99 =
38. 38.31 × 99 =
39. 39.31 × 99 =
40. 40.8 × 9 =

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