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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 45 · 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. 1.0.13 × 49 — where does the decimal point go? (a) 63.7 (b) 6.37 (c) 0.0637 (d) 0.637
  2. 2.5.1 × 0.3 — where does the decimal point go? (a) 15.3 (b) 0.153 (c) 1.53 (d) 0.0153
  3. 3.2.2 × 11 — where does the decimal point go? (a) 24.2 (b) 242 (c) 0.242 (d) 2.42
  4. 4.9.3 × 8 — where does the decimal point go? (a) 0.744 (b) 744 (c) 74.4 (d) 7.44
  5. 5.5.3 × 1.6 — where does the decimal point go? (a) 0.848 (b) 84.8 (c) 8.48 (d) 0.0848
  6. 6.0.63 × 1.4 — where does the decimal point go? (a) 8.82 (b) 0.00882 (c) 0.0882 (d) 0.882
  7. 7.1.7 × 3 — where does the decimal point go? (a) 51 (b) 5.1 (c) 0.051 (d) 0.51
  8. 8.0.71 × 7 — where does the decimal point go? (a) 4.97 (b) 0.497 (c) 49.7 (d) 0.0497
  9. 9.0.63 × 8 — where does the decimal point go? (a) 5.04 (b) 0.0504 (c) 50.4 (d) 0.504
  10. 10.9.7 × 3.4 — where does the decimal point go? (a) 0.3298 (b) 329.8 (c) 3.298 (d) 32.98
  11. 11.0.66 × 3.9 — where does the decimal point go? (a) 2.574 (b) 0.2574 (c) 0.02574 (d) 25.74
  12. 12.8.4 × 0.9 — where does the decimal point go? (a) 7.56 (b) 0.756 (c) 0.0756 (d) 75.6
  13. 13.0.98 × 9 — where does the decimal point go? (a) 8.82 (b) 88.2 (c) 0.0882 (d) 0.882
  14. 14.7.2 × 3 — where does the decimal point go? (a) 21.6 (b) 0.216 (c) 216 (d) 2.16
  15. 15.8.3 × 34 — where does the decimal point go? (a) 2.822 (b) 28.22 (c) 282.2 (d) 2822
  16. 16.0.58 × 43 — where does the decimal point go? (a) 0.2494 (b) 24.94 (c) 249.4 (d) 2.494
  17. 17.3.7 × 3.6 — where does the decimal point go? (a) 13.32 (b) 1.332 (c) 133.2 (d) 0.1332
  18. 18.0.18 × 42 — where does the decimal point go? (a) 0.756 (b) 75.6 (c) 0.0756 (d) 7.56
  19. 19.1.8 × 1.4 — where does the decimal point go? (a) 2.52 (b) 0.0252 (c) 0.252 (d) 25.2
  20. 20.5.7 × 16 — where does the decimal point go? (a) 9.12 (b) 91.2 (c) 0.912 (d) 912
  21. 21.2.8 × 9 — where does the decimal point go? (a) 25.2 (b) 252 (c) 2.52 (d) 0.252
  22. 22.0.26 × 4 — where does the decimal point go? (a) 10.4 (b) 1.04 (c) 0.0104 (d) 0.104
  23. 23.5.3 × 39 — where does the decimal point go? (a) 206.7 (b) 2.067 (c) 20.67 (d) 2067
  24. 24.4.1 × 8 — where does the decimal point go? (a) 328 (b) 32.8 (c) 0.328 (d) 3.28
  25. 25.8.3 × 4.7 — where does the decimal point go? (a) 0.3901 (b) 39.01 (c) 390.1 (d) 3.901
  26. 26.0.39 × 22 — where does the decimal point go? (a) 0.0858 (b) 8.58 (c) 85.8 (d) 0.858
  27. 27.0.74 × 11 — where does the decimal point go? (a) 8.14 (b) 81.4 (c) 0.814 (d) 0.0814
  28. 28.0.86 × 2.2 — where does the decimal point go? (a) 1.892 (b) 0.01892 (c) 0.1892 (d) 18.92
  29. 29.4.8 × 4.3 — where does the decimal point go? (a) 20.64 (b) 206.4 (c) 0.2064 (d) 2.064
  30. 30.0.19 × 0.6 — where does the decimal point go? (a) 0.0114 (b) 0.114 (c) 0.00114 (d) 1.14
  31. 31.1.3 × 37 — where does the decimal point go? (a) 0.481 (b) 481 (c) 48.1 (d) 4.81
  32. 32.0.29 × 8 — where does the decimal point go? (a) 23.2 (b) 0.232 (c) 0.0232 (d) 2.32
  33. 33.5.7 × 21 — where does the decimal point go? (a) 1.197 (b) 1197 (c) 119.7 (d) 11.97
  34. 34.0.17 × 0.8 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 0.00136 (d) 1.36
  35. 35.0.39 × 4 — where does the decimal point go? (a) 15.6 (b) 1.56 (c) 0.156 (d) 0.0156
  36. 36.0.46 × 3 — where does the decimal point go? (a) 1.38 (b) 0.138 (c) 13.8 (d) 0.0138
  37. 37.0.21 × 37 — where does the decimal point go? (a) 0.0777 (b) 0.777 (c) 77.7 (d) 7.77
  38. 38.0.86 × 9 — where does the decimal point go? (a) 0.0774 (b) 0.774 (c) 77.4 (d) 7.74
  39. 39.6.3 × 8 — where does the decimal point go? (a) 0.504 (b) 5.04 (c) 50.4 (d) 504
  40. 40.5.8 × 0.6 — where does the decimal point go? (a) 3.48 (b) 0.348 (c) 0.0348 (d) 34.8

Answer key

  1. 6.37
  2. 1.53
  3. 24.2
  4. 74.4
  5. 8.48
  6. 0.882
  7. 5.1
  8. 4.97
  9. 5.04
  10. 32.98
  11. 2.574
  12. 7.56
  13. 8.82
  14. 21.6
  15. 282.2
  16. 24.94
  17. 13.32
  18. 7.56
  19. 2.52
  20. 91.2
  21. 25.2
  22. 1.04
  23. 206.7
  24. 32.8
  25. 39.01
  26. 8.58
  27. 8.14
  28. 1.892
  29. 20.64
  30. 0.114
  31. 48.1
  32. 2.32
  33. 119.7
  34. 0.136
  35. 1.56
  36. 1.38
  37. 7.77
  38. 7.74
  39. 50.4
  40. 3.48

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