← Where does the decimal point go? lesson New set →

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 629 · 40 questions
TalentJR

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

NameDateTime takenScore ___ / 40
  1. 1.0.36 × 4 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 14.4 (d) 0.0144
  2. 2.3.4 × 42 — where does the decimal point go? (a) 142.8 (b) 14.28 (c) 1.428 (d) 1428
  3. 3.7.9 × 18 — where does the decimal point go? (a) 142.2 (b) 14.22 (c) 1422 (d) 1.422
  4. 4.4.9 × 0.5 — where does the decimal point go? (a) 24.5 (b) 0.245 (c) 2.45 (d) 0.0245
  5. 5.0.14 × 7 — where does the decimal point go? (a) 0.98 (b) 0.0098 (c) 0.098 (d) 9.8
  6. 6.1.3 × 0.6 — where does the decimal point go? (a) 0.0078 (b) 0.78 (c) 0.078 (d) 7.8
  7. 7.0.98 × 0.2 — where does the decimal point go? (a) 0.196 (b) 0.0196 (c) 0.00196 (d) 1.96
  8. 8.0.67 × 43 — where does the decimal point go? (a) 0.2881 (b) 28.81 (c) 288.1 (d) 2.881
  9. 9.0.29 × 4 — where does the decimal point go? (a) 0.0116 (b) 11.6 (c) 0.116 (d) 1.16
  10. 10.1.2 × 7 — where does the decimal point go? (a) 8.4 (b) 0.84 (c) 0.084 (d) 84
  11. 11.0.33 × 24 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 7.92 (d) 79.2
  12. 12.7.8 × 21 — where does the decimal point go? (a) 1638 (b) 163.8 (c) 16.38 (d) 1.638
  13. 13.0.84 × 21 — where does the decimal point go? (a) 0.1764 (b) 176.4 (c) 1.764 (d) 17.64
  14. 14.0.23 × 2.6 — where does the decimal point go? (a) 0.00598 (b) 0.598 (c) 5.98 (d) 0.0598
  15. 15.0.73 × 0.9 — where does the decimal point go? (a) 0.00657 (b) 6.57 (c) 0.0657 (d) 0.657
  16. 16.1.9 × 0.9 — where does the decimal point go? (a) 0.171 (b) 1.71 (c) 17.1 (d) 0.0171
  17. 17.9.6 × 2.9 — where does the decimal point go? (a) 278.4 (b) 2.784 (c) 0.2784 (d) 27.84
  18. 18.0.69 × 25 — where does the decimal point go? (a) 172.5 (b) 1.725 (c) 0.1725 (d) 17.25
  19. 19.0.43 × 39 — where does the decimal point go? (a) 167.7 (b) 16.77 (c) 1.677 (d) 0.1677
  20. 20.3.9 × 0.3 — where does the decimal point go? (a) 0.117 (b) 11.7 (c) 1.17 (d) 0.0117
  21. 21.0.17 × 3 — where does the decimal point go? (a) 5.1 (b) 0.051 (c) 0.51 (d) 0.0051
  22. 22.3.7 × 6 — where does the decimal point go? (a) 0.222 (b) 2.22 (c) 222 (d) 22.2
  23. 23.0.18 × 3 — where does the decimal point go? (a) 0.054 (b) 0.54 (c) 5.4 (d) 0.0054
  24. 24.4.3 × 1.7 — where does the decimal point go? (a) 0.731 (b) 7.31 (c) 0.0731 (d) 73.1
  25. 25.8.2 × 8 — where does the decimal point go? (a) 65.6 (b) 6.56 (c) 0.656 (d) 656
  26. 26.2.1 × 1.4 — where does the decimal point go? (a) 0.294 (b) 29.4 (c) 2.94 (d) 0.0294
  27. 27.0.57 × 41 — where does the decimal point go? (a) 2.337 (b) 0.2337 (c) 233.7 (d) 23.37
  28. 28.0.54 × 0.6 — where does the decimal point go? (a) 0.0324 (b) 3.24 (c) 0.324 (d) 0.00324
  29. 29.0.32 × 8 — where does the decimal point go? (a) 25.6 (b) 0.0256 (c) 0.256 (d) 2.56
  30. 30.9.3 × 1.7 — where does the decimal point go? (a) 15.81 (b) 158.1 (c) 1.581 (d) 0.1581
  31. 31.3.6 × 3 — where does the decimal point go? (a) 1.08 (b) 10.8 (c) 108 (d) 0.108
  32. 32.0.44 × 2 — where does the decimal point go? (a) 0.088 (b) 8.8 (c) 0.0088 (d) 0.88
  33. 33.0.23 × 3.8 — where does the decimal point go? (a) 8.74 (b) 0.874 (c) 0.00874 (d) 0.0874
  34. 34.0.17 × 11 — where does the decimal point go? (a) 0.0187 (b) 0.187 (c) 1.87 (d) 18.7
  35. 35.0.59 × 2.1 — where does the decimal point go? (a) 1.239 (b) 12.39 (c) 0.01239 (d) 0.1239
  36. 36.6.1 × 8 — where does the decimal point go? (a) 0.488 (b) 4.88 (c) 48.8 (d) 488
  37. 37.2.8 × 0.9 — where does the decimal point go? (a) 0.0252 (b) 2.52 (c) 0.252 (d) 25.2
  38. 38.7.4 × 2.4 — where does the decimal point go? (a) 17.76 (b) 1.776 (c) 0.1776 (d) 177.6
  39. 39.7.2 × 24 — where does the decimal point go? (a) 1.728 (b) 1728 (c) 17.28 (d) 172.8
  40. 40.5.2 × 3.9 — where does the decimal point go? (a) 0.2028 (b) 20.28 (c) 202.8 (d) 2.028

Answer key

  1. 1.44
  2. 142.8
  3. 142.2
  4. 2.45
  5. 0.98
  6. 0.78
  7. 0.196
  8. 28.81
  9. 1.16
  10. 8.4
  11. 7.92
  12. 163.8
  13. 17.64
  14. 0.598
  15. 0.657
  16. 1.71
  17. 27.84
  18. 17.25
  19. 16.77
  20. 1.17
  21. 0.51
  22. 22.2
  23. 0.54
  24. 7.31
  25. 65.6
  26. 2.94
  27. 23.37
  28. 0.324
  29. 2.56
  30. 15.81
  31. 10.8
  32. 0.88
  33. 0.874
  34. 1.87
  35. 1.239
  36. 48.8
  37. 2.52
  38. 17.76
  39. 172.8
  40. 20.28

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks