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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 603 · 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. 1.5.1 × 36 — where does the decimal point go? (a) 183.6 (b) 18.36 (c) 1836 (d) 1.836
  2. 2.1.5 × 0.5 — where does the decimal point go? (a) 0.075 (b) 0.0075 (c) 7.5 (d) 0.75
  3. 3.0.52 × 0.4 — where does the decimal point go? (a) 0.0208 (b) 0.00208 (c) 2.08 (d) 0.208
  4. 4.0.73 × 0.9 — where does the decimal point go? (a) 0.00657 (b) 0.0657 (c) 6.57 (d) 0.657
  5. 5.0.76 × 0.2 — where does the decimal point go? (a) 0.00152 (b) 0.0152 (c) 1.52 (d) 0.152
  6. 6.0.33 × 5 — where does the decimal point go? (a) 0.165 (b) 0.0165 (c) 16.5 (d) 1.65
  7. 7.2.3 × 2 — where does the decimal point go? (a) 0.46 (b) 4.6 (c) 0.046 (d) 46
  8. 8.4.8 × 7 — where does the decimal point go? (a) 336 (b) 3.36 (c) 33.6 (d) 0.336
  9. 9.0.21 × 5 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 1.05 (d) 10.5
  10. 10.0.68 × 0.8 — where does the decimal point go? (a) 0.0544 (b) 0.544 (c) 5.44 (d) 0.00544
  11. 11.0.59 × 0.8 — where does the decimal point go? (a) 0.00472 (b) 0.0472 (c) 0.472 (d) 4.72
  12. 12.0.38 × 2 — where does the decimal point go? (a) 0.76 (b) 0.0076 (c) 7.6 (d) 0.076
  13. 13.0.76 × 0.6 — where does the decimal point go? (a) 4.56 (b) 0.0456 (c) 0.456 (d) 0.00456
  14. 14.4.5 × 7 — where does the decimal point go? (a) 315 (b) 31.5 (c) 0.315 (d) 3.15
  15. 15.3.9 × 2.5 — where does the decimal point go? (a) 0.0975 (b) 0.975 (c) 97.5 (d) 9.75
  16. 16.0.29 × 3 — where does the decimal point go? (a) 0.087 (b) 0.0087 (c) 0.87 (d) 8.7
  17. 17.0.17 × 0.8 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 1.36 (d) 0.00136
  18. 18.9.8 × 21 — where does the decimal point go? (a) 20.58 (b) 2.058 (c) 205.8 (d) 2058
  19. 19.3.4 × 1.6 — where does the decimal point go? (a) 0.544 (b) 5.44 (c) 54.4 (d) 0.0544
  20. 20.3.7 × 4 — where does the decimal point go? (a) 148 (b) 14.8 (c) 0.148 (d) 1.48
  21. 21.0.37 × 9 — where does the decimal point go? (a) 3.33 (b) 0.333 (c) 0.0333 (d) 33.3
  22. 22.6.1 × 35 — where does the decimal point go? (a) 2135 (b) 21.35 (c) 2.135 (d) 213.5
  23. 23.0.37 × 5 — where does the decimal point go? (a) 0.185 (b) 1.85 (c) 0.0185 (d) 18.5
  24. 24.0.27 × 5 — where does the decimal point go? (a) 13.5 (b) 0.0135 (c) 1.35 (d) 0.135
  25. 25.4.1 × 0.2 — where does the decimal point go? (a) 0.082 (b) 0.0082 (c) 0.82 (d) 8.2
  26. 26.0.57 × 4 — where does the decimal point go? (a) 2.28 (b) 0.0228 (c) 0.228 (d) 22.8
  27. 27.9.7 × 0.6 — where does the decimal point go? (a) 5.82 (b) 58.2 (c) 0.0582 (d) 0.582
  28. 28.0.82 × 1.9 — where does the decimal point go? (a) 0.1558 (b) 0.01558 (c) 1.558 (d) 15.58
  29. 29.8.2 × 1.1 — where does the decimal point go? (a) 0.902 (b) 0.0902 (c) 9.02 (d) 90.2
  30. 30.2.6 × 1.7 — where does the decimal point go? (a) 0.0442 (b) 44.2 (c) 4.42 (d) 0.442
  31. 31.0.84 × 2 — where does the decimal point go? (a) 16.8 (b) 0.168 (c) 0.0168 (d) 1.68
  32. 32.6.7 × 4.8 — where does the decimal point go? (a) 32.16 (b) 0.3216 (c) 3.216 (d) 321.6
  33. 33.3.4 × 8 — where does the decimal point go? (a) 272 (b) 27.2 (c) 0.272 (d) 2.72
  34. 34.2.8 × 4.9 — where does the decimal point go? (a) 137.2 (b) 13.72 (c) 0.1372 (d) 1.372
  35. 35.0.27 × 7 — where does the decimal point go? (a) 1.89 (b) 18.9 (c) 0.189 (d) 0.0189
  36. 36.2.8 × 18 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 504 (d) 0.504
  37. 37.8.9 × 2.5 — where does the decimal point go? (a) 0.2225 (b) 22.25 (c) 222.5 (d) 2.225
  38. 38.0.14 × 9 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
  39. 39.0.96 × 0.3 — where does the decimal point go? (a) 0.0288 (b) 0.288 (c) 0.00288 (d) 2.88
  40. 40.0.88 × 4.3 — where does the decimal point go? (a) 37.84 (b) 0.3784 (c) 3.784 (d) 0.03784

Answer key

  1. 183.6
  2. 0.75
  3. 0.208
  4. 0.657
  5. 0.152
  6. 1.65
  7. 4.6
  8. 33.6
  9. 1.05
  10. 0.544
  11. 0.472
  12. 0.76
  13. 0.456
  14. 31.5
  15. 9.75
  16. 0.87
  17. 0.136
  18. 205.8
  19. 5.44
  20. 14.8
  21. 3.33
  22. 213.5
  23. 1.85
  24. 1.35
  25. 0.82
  26. 2.28
  27. 5.82
  28. 1.558
  29. 9.02
  30. 4.42
  31. 1.68
  32. 32.16
  33. 27.2
  34. 13.72
  35. 1.89
  36. 50.4
  37. 22.25
  38. 1.26
  39. 0.288
  40. 3.784

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