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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 623 · 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. 1.5.7 × 2 — where does the decimal point go? (a) 11.4 (b) 1.14 (c) 0.114 (d) 114
  2. 2.0.13 × 8 — where does the decimal point go? (a) 1.04 (b) 0.104 (c) 0.0104 (d) 10.4
  3. 3.7.6 × 2 — where does the decimal point go? (a) 1.52 (b) 15.2 (c) 0.152 (d) 152
  4. 4.0.74 × 0.6 — where does the decimal point go? (a) 0.444 (b) 0.00444 (c) 0.0444 (d) 4.44
  5. 5.1.2 × 4 — where does the decimal point go? (a) 48 (b) 0.048 (c) 0.48 (d) 4.8
  6. 6.0.23 × 21 — where does the decimal point go? (a) 48.3 (b) 4.83 (c) 0.0483 (d) 0.483
  7. 7.5.3 × 6 — where does the decimal point go? (a) 318 (b) 0.318 (c) 3.18 (d) 31.8
  8. 8.8.4 × 0.2 — where does the decimal point go? (a) 0.0168 (b) 16.8 (c) 0.168 (d) 1.68
  9. 9.2.4 × 9 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 216 (d) 21.6
  10. 10.0.21 × 0.4 — where does the decimal point go? (a) 0.84 (b) 0.0084 (c) 0.00084 (d) 0.084
  11. 11.5.9 × 49 — where does the decimal point go? (a) 2.891 (b) 2891 (c) 289.1 (d) 28.91
  12. 12.9.9 × 3 — where does the decimal point go? (a) 29.7 (b) 2.97 (c) 0.297 (d) 297
  13. 13.6.7 × 0.7 — where does the decimal point go? (a) 0.0469 (b) 4.69 (c) 46.9 (d) 0.469
  14. 14.0.26 × 9 — where does the decimal point go? (a) 2.34 (b) 0.0234 (c) 23.4 (d) 0.234
  15. 15.0.19 × 0.5 — where does the decimal point go? (a) 0.095 (b) 0.95 (c) 0.0095 (d) 0.00095
  16. 16.5.1 × 0.6 — where does the decimal point go? (a) 0.0306 (b) 30.6 (c) 3.06 (d) 0.306
  17. 17.1.5 × 19 — where does the decimal point go? (a) 2.85 (b) 28.5 (c) 0.285 (d) 285
  18. 18.4.8 × 0.8 — where does the decimal point go? (a) 0.384 (b) 0.0384 (c) 38.4 (d) 3.84
  19. 19.0.71 × 7 — where does the decimal point go? (a) 0.0497 (b) 0.497 (c) 49.7 (d) 4.97
  20. 20.0.85 × 0.9 — where does the decimal point go? (a) 0.765 (b) 0.00765 (c) 0.0765 (d) 7.65
  21. 21.0.49 × 2.3 — where does the decimal point go? (a) 11.27 (b) 0.01127 (c) 1.127 (d) 0.1127
  22. 22.0.15 × 2.5 — where does the decimal point go? (a) 0.00375 (b) 3.75 (c) 0.0375 (d) 0.375
  23. 23.9.3 × 0.4 — where does the decimal point go? (a) 37.2 (b) 3.72 (c) 0.0372 (d) 0.372
  24. 24.0.15 × 0.5 — where does the decimal point go? (a) 0.075 (b) 0.00075 (c) 0.0075 (d) 0.75
  25. 25.2.8 × 3.9 — where does the decimal point go? (a) 109.2 (b) 10.92 (c) 1.092 (d) 0.1092
  26. 26.0.88 × 0.9 — where does the decimal point go? (a) 0.0792 (b) 7.92 (c) 0.792 (d) 0.00792
  27. 27.1.3 × 13 — where does the decimal point go? (a) 0.169 (b) 1.69 (c) 169 (d) 16.9
  28. 28.0.97 × 0.3 — where does the decimal point go? (a) 0.291 (b) 0.00291 (c) 2.91 (d) 0.0291
  29. 29.4.9 × 9 — where does the decimal point go? (a) 44.1 (b) 4.41 (c) 0.441 (d) 441
  30. 30.0.84 × 4.6 — where does the decimal point go? (a) 0.3864 (b) 3.864 (c) 0.03864 (d) 38.64
  31. 31.8.1 × 3 — where does the decimal point go? (a) 2.43 (b) 24.3 (c) 0.243 (d) 243
  32. 32.6.1 × 22 — where does the decimal point go? (a) 134.2 (b) 1.342 (c) 1342 (d) 13.42
  33. 33.0.82 × 2.3 — where does the decimal point go? (a) 18.86 (b) 1.886 (c) 0.1886 (d) 0.01886
  34. 34.0.49 × 18 — where does the decimal point go? (a) 8.82 (b) 88.2 (c) 0.0882 (d) 0.882
  35. 35.2.7 × 2 — where does the decimal point go? (a) 0.54 (b) 54 (c) 0.054 (d) 5.4
  36. 36.9.2 × 2.8 — where does the decimal point go? (a) 0.2576 (b) 2.576 (c) 257.6 (d) 25.76
  37. 37.2.2 × 2.8 — where does the decimal point go? (a) 0.616 (b) 0.0616 (c) 61.6 (d) 6.16
  38. 38.1.6 × 0.8 — where does the decimal point go? (a) 0.128 (b) 1.28 (c) 0.0128 (d) 12.8
  39. 39.6.2 × 0.2 — where does the decimal point go? (a) 1.24 (b) 12.4 (c) 0.0124 (d) 0.124
  40. 40.0.54 × 29 — where does the decimal point go? (a) 15.66 (b) 1.566 (c) 156.6 (d) 0.1566

Answer key

  1. 11.4
  2. 1.04
  3. 15.2
  4. 0.444
  5. 4.8
  6. 4.83
  7. 31.8
  8. 1.68
  9. 21.6
  10. 0.084
  11. 289.1
  12. 29.7
  13. 4.69
  14. 2.34
  15. 0.095
  16. 3.06
  17. 28.5
  18. 3.84
  19. 4.97
  20. 0.765
  21. 1.127
  22. 0.375
  23. 3.72
  24. 0.075
  25. 10.92
  26. 0.792
  27. 16.9
  28. 0.291
  29. 44.1
  30. 3.864
  31. 24.3
  32. 134.2
  33. 1.886
  34. 8.82
  35. 5.4
  36. 25.76
  37. 6.16
  38. 1.28
  39. 1.24
  40. 15.66

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