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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 784 · 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. 1.0.38 × 0.9 — where does the decimal point go? (a) 0.00342 (b) 0.0342 (c) 0.342 (d) 3.42
  2. 2.1.2 × 4 — where does the decimal point go? (a) 0.48 (b) 4.8 (c) 0.048 (d) 48
  3. 3.2.6 × 3 — where does the decimal point go? (a) 0.078 (b) 0.78 (c) 78 (d) 7.8
  4. 4.0.87 × 34 — where does the decimal point go? (a) 29.58 (b) 0.2958 (c) 2.958 (d) 295.8
  5. 5.1.7 × 5 — where does the decimal point go? (a) 0.085 (b) 85 (c) 8.5 (d) 0.85
  6. 6.0.23 × 7 — where does the decimal point go? (a) 16.1 (b) 0.0161 (c) 0.161 (d) 1.61
  7. 7.5.4 × 42 — where does the decimal point go? (a) 226.8 (b) 22.68 (c) 2.268 (d) 2268
  8. 8.0.88 × 2.8 — where does the decimal point go? (a) 24.64 (b) 0.2464 (c) 2.464 (d) 0.02464
  9. 9.4.9 × 0.7 — where does the decimal point go? (a) 3.43 (b) 0.343 (c) 0.0343 (d) 34.3
  10. 10.0.57 × 0.4 — where does the decimal point go? (a) 0.228 (b) 2.28 (c) 0.00228 (d) 0.0228
  11. 11.7.1 × 2.5 — where does the decimal point go? (a) 1.775 (b) 177.5 (c) 17.75 (d) 0.1775
  12. 12.5.1 × 0.6 — where does the decimal point go? (a) 0.0306 (b) 3.06 (c) 0.306 (d) 30.6
  13. 13.8.1 × 1.7 — where does the decimal point go? (a) 137.7 (b) 0.1377 (c) 1.377 (d) 13.77
  14. 14.7.1 × 8 — where does the decimal point go? (a) 0.568 (b) 568 (c) 56.8 (d) 5.68
  15. 15.4.7 × 15 — where does the decimal point go? (a) 70.5 (b) 705 (c) 7.05 (d) 0.705
  16. 16.0.85 × 3 — where does the decimal point go? (a) 0.0255 (b) 25.5 (c) 2.55 (d) 0.255
  17. 17.6.9 × 15 — where does the decimal point go? (a) 10.35 (b) 1035 (c) 103.5 (d) 1.035
  18. 18.2.2 × 42 — where does the decimal point go? (a) 9.24 (b) 0.924 (c) 924 (d) 92.4
  19. 19.0.17 × 0.8 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 0.00136 (d) 1.36
  20. 20.8.8 × 0.8 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 0.0704 (d) 70.4
  21. 21.5.3 × 1.4 — where does the decimal point go? (a) 7.42 (b) 0.742 (c) 0.0742 (d) 74.2
  22. 22.0.17 × 4 — where does the decimal point go? (a) 0.0068 (b) 6.8 (c) 0.68 (d) 0.068
  23. 23.0.19 × 3.5 — where does the decimal point go? (a) 0.665 (b) 0.0665 (c) 0.00665 (d) 6.65
  24. 24.0.36 × 19 — where does the decimal point go? (a) 0.0684 (b) 0.684 (c) 6.84 (d) 68.4
  25. 25.0.91 × 1.5 — where does the decimal point go? (a) 13.65 (b) 0.01365 (c) 1.365 (d) 0.1365
  26. 26.0.72 × 1.1 — where does the decimal point go? (a) 0.00792 (b) 0.792 (c) 0.0792 (d) 7.92
  27. 27.7.9 × 0.7 — where does the decimal point go? (a) 55.3 (b) 5.53 (c) 0.553 (d) 0.0553
  28. 28.9.3 × 3 — where does the decimal point go? (a) 27.9 (b) 279 (c) 0.279 (d) 2.79
  29. 29.0.71 × 0.2 — where does the decimal point go? (a) 0.0142 (b) 1.42 (c) 0.142 (d) 0.00142
  30. 30.0.47 × 15 — where does the decimal point go? (a) 0.0705 (b) 70.5 (c) 0.705 (d) 7.05
  31. 31.0.38 × 7 — where does the decimal point go? (a) 26.6 (b) 0.0266 (c) 2.66 (d) 0.266
  32. 32.0.65 × 5 — where does the decimal point go? (a) 0.0325 (b) 3.25 (c) 32.5 (d) 0.325
  33. 33.2.5 × 5 — where does the decimal point go? (a) 1.25 (b) 125 (c) 0.125 (d) 12.5
  34. 34.1.3 × 4.3 — where does the decimal point go? (a) 0.559 (b) 5.59 (c) 55.9 (d) 0.0559
  35. 35.5.4 × 2.8 — where does the decimal point go? (a) 151.2 (b) 0.1512 (c) 1.512 (d) 15.12
  36. 36.0.62 × 9 — where does the decimal point go? (a) 5.58 (b) 0.0558 (c) 55.8 (d) 0.558
  37. 37.0.62 × 4 — where does the decimal point go? (a) 0.0248 (b) 0.248 (c) 2.48 (d) 24.8
  38. 38.0.67 × 7 — where does the decimal point go? (a) 0.469 (b) 4.69 (c) 0.0469 (d) 46.9
  39. 39.6.7 × 2.8 — where does the decimal point go? (a) 187.6 (b) 18.76 (c) 1.876 (d) 0.1876
  40. 40.1.6 × 28 — where does the decimal point go? (a) 44.8 (b) 448 (c) 4.48 (d) 0.448

Answer key

  1. 0.342
  2. 4.8
  3. 7.8
  4. 29.58
  5. 8.5
  6. 1.61
  7. 226.8
  8. 2.464
  9. 3.43
  10. 0.228
  11. 17.75
  12. 3.06
  13. 13.77
  14. 56.8
  15. 70.5
  16. 2.55
  17. 103.5
  18. 92.4
  19. 0.136
  20. 7.04
  21. 7.42
  22. 0.68
  23. 0.665
  24. 6.84
  25. 1.365
  26. 0.792
  27. 5.53
  28. 27.9
  29. 0.142
  30. 7.05
  31. 2.66
  32. 3.25
  33. 12.5
  34. 5.59
  35. 15.12
  36. 5.58
  37. 2.48
  38. 4.69
  39. 18.76
  40. 44.8

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