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

Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 933 · 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. 1.0.68 × 33 — where does the decimal point go? (a) 224.4 (b) 2.244 (c) 22.44 (d) 0.2244
  2. 2.0.69 × 25 — where does the decimal point go? (a) 0.1725 (b) 172.5 (c) 1.725 (d) 17.25
  3. 3.0.31 × 0.5 — where does the decimal point go? (a) 0.00155 (b) 1.55 (c) 0.0155 (d) 0.155
  4. 4.8.1 × 0.4 — where does the decimal point go? (a) 3.24 (b) 0.324 (c) 32.4 (d) 0.0324
  5. 5.6.2 × 3 — where does the decimal point go? (a) 186 (b) 18.6 (c) 0.186 (d) 1.86
  6. 6.6.7 × 6 — where does the decimal point go? (a) 0.402 (b) 4.02 (c) 402 (d) 40.2
  7. 7.0.98 × 13 — where does the decimal point go? (a) 12.74 (b) 0.1274 (c) 1.274 (d) 127.4
  8. 8.0.38 × 3 — where does the decimal point go? (a) 11.4 (b) 0.0114 (c) 1.14 (d) 0.114
  9. 9.3.1 × 5 — where does the decimal point go? (a) 155 (b) 0.155 (c) 1.55 (d) 15.5
  10. 10.4.3 × 2 — where does the decimal point go? (a) 86 (b) 0.86 (c) 0.086 (d) 8.6
  11. 11.4.5 × 7 — where does the decimal point go? (a) 3.15 (b) 31.5 (c) 315 (d) 0.315
  12. 12.8.5 × 13 — where does the decimal point go? (a) 110.5 (b) 1105 (c) 11.05 (d) 1.105
  13. 13.0.99 × 0.7 — where does the decimal point go? (a) 0.0693 (b) 0.00693 (c) 6.93 (d) 0.693
  14. 14.8.9 × 7 — where does the decimal point go? (a) 0.623 (b) 623 (c) 62.3 (d) 6.23
  15. 15.7.6 × 14 — where does the decimal point go? (a) 10.64 (b) 1.064 (c) 106.4 (d) 1064
  16. 16.0.28 × 1.3 — where does the decimal point go? (a) 0.00364 (b) 3.64 (c) 0.364 (d) 0.0364
  17. 17.0.16 × 22 — where does the decimal point go? (a) 0.352 (b) 0.0352 (c) 35.2 (d) 3.52
  18. 18.4.9 × 38 — where does the decimal point go? (a) 1.862 (b) 186.2 (c) 18.62 (d) 1862
  19. 19.0.48 × 32 — where does the decimal point go? (a) 153.6 (b) 0.1536 (c) 1.536 (d) 15.36
  20. 20.1.9 × 0.7 — where does the decimal point go? (a) 13.3 (b) 1.33 (c) 0.133 (d) 0.0133
  21. 21.9.9 × 5 — where does the decimal point go? (a) 0.495 (b) 495 (c) 49.5 (d) 4.95
  22. 22.8.6 × 36 — where does the decimal point go? (a) 3.096 (b) 30.96 (c) 309.6 (d) 3096
  23. 23.6.1 × 3 — where does the decimal point go? (a) 183 (b) 18.3 (c) 0.183 (d) 1.83
  24. 24.2.8 × 22 — where does the decimal point go? (a) 616 (b) 0.616 (c) 6.16 (d) 61.6
  25. 25.5.3 × 3 — where does the decimal point go? (a) 159 (b) 1.59 (c) 15.9 (d) 0.159
  26. 26.0.93 × 2.7 — where does the decimal point go? (a) 0.2511 (b) 2.511 (c) 0.02511 (d) 25.11
  27. 27.7.1 × 6 — where does the decimal point go? (a) 42.6 (b) 426 (c) 0.426 (d) 4.26
  28. 28.0.34 × 0.4 — where does the decimal point go? (a) 0.00136 (b) 0.136 (c) 1.36 (d) 0.0136
  29. 29.4.2 × 1.8 — where does the decimal point go? (a) 0.756 (b) 0.0756 (c) 75.6 (d) 7.56
  30. 30.0.89 × 7 — where does the decimal point go? (a) 0.0623 (b) 6.23 (c) 0.623 (d) 62.3
  31. 31.8.3 × 2 — where does the decimal point go? (a) 0.166 (b) 16.6 (c) 166 (d) 1.66
  32. 32.0.56 × 2 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 11.2 (d) 0.0112
  33. 33.0.26 × 11 — where does the decimal point go? (a) 0.0286 (b) 0.286 (c) 2.86 (d) 28.6
  34. 34.2.9 × 3 — where does the decimal point go? (a) 0.87 (b) 0.087 (c) 87 (d) 8.7
  35. 35.7.4 × 29 — where does the decimal point go? (a) 2146 (b) 21.46 (c) 214.6 (d) 2.146
  36. 36.0.45 × 0.7 — where does the decimal point go? (a) 0.315 (b) 3.15 (c) 0.00315 (d) 0.0315
  37. 37.2.1 × 7 — where does the decimal point go? (a) 14.7 (b) 1.47 (c) 147 (d) 0.147
  38. 38.2.7 × 4.6 — where does the decimal point go? (a) 124.2 (b) 0.1242 (c) 1.242 (d) 12.42
  39. 39.0.37 × 43 — where does the decimal point go? (a) 159.1 (b) 15.91 (c) 0.1591 (d) 1.591
  40. 40.8.9 × 0.3 — where does the decimal point go? (a) 0.0267 (b) 26.7 (c) 2.67 (d) 0.267

Answer key

  1. 22.44
  2. 17.25
  3. 0.155
  4. 3.24
  5. 18.6
  6. 40.2
  7. 12.74
  8. 1.14
  9. 15.5
  10. 8.6
  11. 31.5
  12. 110.5
  13. 0.693
  14. 62.3
  15. 106.4
  16. 0.364
  17. 3.52
  18. 186.2
  19. 15.36
  20. 1.33
  21. 49.5
  22. 309.6
  23. 18.3
  24. 61.6
  25. 15.9
  26. 2.511
  27. 42.6
  28. 0.136
  29. 7.56
  30. 6.23
  31. 16.6
  32. 1.12
  33. 2.86
  34. 8.7
  35. 214.6
  36. 0.315
  37. 14.7
  38. 12.42
  39. 15.91
  40. 2.67

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