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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 844 · 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. 1.9.3 × 6 — where does the decimal point go? (a) 5.58 (b) 558 (c) 0.558 (d) 55.8
  2. 2.8.7 × 35 — where does the decimal point go? (a) 30.45 (b) 3045 (c) 3.045 (d) 304.5
  3. 3.0.58 × 2 — where does the decimal point go? (a) 0.116 (b) 11.6 (c) 0.0116 (d) 1.16
  4. 4.4.6 × 9 — where does the decimal point go? (a) 414 (b) 4.14 (c) 41.4 (d) 0.414
  5. 5.8.5 × 7 — where does the decimal point go? (a) 595 (b) 59.5 (c) 5.95 (d) 0.595
  6. 6.6.4 × 0.9 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 57.6 (d) 5.76
  7. 7.7.6 × 3.6 — where does the decimal point go? (a) 2.736 (b) 0.2736 (c) 273.6 (d) 27.36
  8. 8.0.71 × 2.9 — where does the decimal point go? (a) 0.2059 (b) 2.059 (c) 0.02059 (d) 20.59
  9. 9.0.73 × 11 — where does the decimal point go? (a) 0.803 (b) 8.03 (c) 0.0803 (d) 80.3
  10. 10.0.67 × 0.7 — where does the decimal point go? (a) 0.0469 (b) 4.69 (c) 0.00469 (d) 0.469
  11. 11.6.1 × 16 — where does the decimal point go? (a) 9.76 (b) 97.6 (c) 976 (d) 0.976
  12. 12.9.9 × 2.9 — where does the decimal point go? (a) 2.871 (b) 287.1 (c) 0.2871 (d) 28.71
  13. 13.0.65 × 39 — where does the decimal point go? (a) 0.2535 (b) 25.35 (c) 253.5 (d) 2.535
  14. 14.0.88 × 26 — where does the decimal point go? (a) 2.288 (b) 0.2288 (c) 22.88 (d) 228.8
  15. 15.0.85 × 0.7 — where does the decimal point go? (a) 0.595 (b) 0.00595 (c) 5.95 (d) 0.0595
  16. 16.6.7 × 2.3 — where does the decimal point go? (a) 1.541 (b) 154.1 (c) 15.41 (d) 0.1541
  17. 17.0.78 × 2 — where does the decimal point go? (a) 0.0156 (b) 1.56 (c) 15.6 (d) 0.156
  18. 18.4.7 × 0.5 — where does the decimal point go? (a) 23.5 (b) 0.0235 (c) 2.35 (d) 0.235
  19. 19.3.1 × 18 — where does the decimal point go? (a) 0.558 (b) 55.8 (c) 5.58 (d) 558
  20. 20.9.1 × 2.3 — where does the decimal point go? (a) 20.93 (b) 2.093 (c) 0.2093 (d) 209.3
  21. 21.0.98 × 3.9 — where does the decimal point go? (a) 0.03822 (b) 0.3822 (c) 3.822 (d) 38.22
  22. 22.0.64 × 12 — where does the decimal point go? (a) 0.768 (b) 7.68 (c) 0.0768 (d) 76.8
  23. 23.9.5 × 1.1 — where does the decimal point go? (a) 1.045 (b) 0.1045 (c) 104.5 (d) 10.45
  24. 24.0.19 × 44 — where does the decimal point go? (a) 8.36 (b) 0.0836 (c) 0.836 (d) 83.6
  25. 25.3.3 × 1.1 — where does the decimal point go? (a) 0.363 (b) 3.63 (c) 0.0363 (d) 36.3
  26. 26.4.9 × 0.5 — where does the decimal point go? (a) 0.245 (b) 0.0245 (c) 2.45 (d) 24.5
  27. 27.0.81 × 3 — where does the decimal point go? (a) 2.43 (b) 24.3 (c) 0.0243 (d) 0.243
  28. 28.3.9 × 15 — where does the decimal point go? (a) 58.5 (b) 0.585 (c) 5.85 (d) 585
  29. 29.0.18 × 22 — where does the decimal point go? (a) 0.0396 (b) 0.396 (c) 39.6 (d) 3.96
  30. 30.6.8 × 0.8 — where does the decimal point go? (a) 54.4 (b) 0.0544 (c) 5.44 (d) 0.544
  31. 31.1.7 × 0.2 — where does the decimal point go? (a) 3.4 (b) 0.0034 (c) 0.034 (d) 0.34
  32. 32.0.62 × 36 — where does the decimal point go? (a) 2.232 (b) 0.2232 (c) 22.32 (d) 223.2
  33. 33.8.4 × 2.9 — where does the decimal point go? (a) 24.36 (b) 243.6 (c) 2.436 (d) 0.2436
  34. 34.3.7 × 9 — where does the decimal point go? (a) 3.33 (b) 333 (c) 33.3 (d) 0.333
  35. 35.4.4 × 3 — where does the decimal point go? (a) 1.32 (b) 0.132 (c) 132 (d) 13.2
  36. 36.0.78 × 23 — where does the decimal point go? (a) 179.4 (b) 0.1794 (c) 1.794 (d) 17.94
  37. 37.0.79 × 2.9 — where does the decimal point go? (a) 22.91 (b) 0.2291 (c) 2.291 (d) 0.02291
  38. 38.8.6 × 4 — where does the decimal point go? (a) 3.44 (b) 344 (c) 34.4 (d) 0.344
  39. 39.0.25 × 5 — where does the decimal point go? (a) 0.125 (b) 0.0125 (c) 1.25 (d) 12.5
  40. 40.2.7 × 0.2 — where does the decimal point go? (a) 0.54 (b) 0.0054 (c) 5.4 (d) 0.054

Answer key

  1. 55.8
  2. 304.5
  3. 1.16
  4. 41.4
  5. 59.5
  6. 5.76
  7. 27.36
  8. 2.059
  9. 8.03
  10. 0.469
  11. 97.6
  12. 28.71
  13. 25.35
  14. 22.88
  15. 0.595
  16. 15.41
  17. 1.56
  18. 2.35
  19. 55.8
  20. 20.93
  21. 3.822
  22. 7.68
  23. 10.45
  24. 8.36
  25. 3.63
  26. 2.45
  27. 2.43
  28. 58.5
  29. 3.96
  30. 5.44
  31. 0.34
  32. 22.32
  33. 24.36
  34. 33.3
  35. 13.2
  36. 17.94
  37. 2.291
  38. 34.4
  39. 1.25
  40. 0.54

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