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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 960 · 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. 1.0.29 × 4 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.0116 (d) 0.116
  2. 2.0.57 × 3.1 — where does the decimal point go? (a) 0.1767 (b) 0.01767 (c) 1.767 (d) 17.67
  3. 3.0.48 × 2 — where does the decimal point go? (a) 0.96 (b) 9.6 (c) 0.096 (d) 0.0096
  4. 4.1.3 × 4 — where does the decimal point go? (a) 52 (b) 0.052 (c) 5.2 (d) 0.52
  5. 5.0.67 × 6 — where does the decimal point go? (a) 4.02 (b) 0.402 (c) 0.0402 (d) 40.2
  6. 6.0.91 × 14 — where does the decimal point go? (a) 0.1274 (b) 12.74 (c) 127.4 (d) 1.274
  7. 7.0.82 × 37 — where does the decimal point go? (a) 0.3034 (b) 303.4 (c) 30.34 (d) 3.034
  8. 8.0.98 × 9 — where does the decimal point go? (a) 0.882 (b) 0.0882 (c) 88.2 (d) 8.82
  9. 9.0.12 × 49 — where does the decimal point go? (a) 0.588 (b) 0.0588 (c) 5.88 (d) 58.8
  10. 10.2.8 × 9 — where does the decimal point go? (a) 2.52 (b) 252 (c) 25.2 (d) 0.252
  11. 11.7.3 × 44 — where does the decimal point go? (a) 321.2 (b) 32.12 (c) 3.212 (d) 3212
  12. 12.3.5 × 17 — where does the decimal point go? (a) 0.595 (b) 595 (c) 5.95 (d) 59.5
  13. 13.0.54 × 8 — where does the decimal point go? (a) 0.432 (b) 4.32 (c) 43.2 (d) 0.0432
  14. 14.8.5 × 1.9 — where does the decimal point go? (a) 16.15 (b) 161.5 (c) 0.1615 (d) 1.615
  15. 15.7.9 × 0.7 — where does the decimal point go? (a) 0.553 (b) 0.0553 (c) 55.3 (d) 5.53
  16. 16.0.73 × 4 — where does the decimal point go? (a) 2.92 (b) 0.292 (c) 29.2 (d) 0.0292
  17. 17.0.53 × 1.5 — where does the decimal point go? (a) 0.795 (b) 0.0795 (c) 0.00795 (d) 7.95
  18. 18.0.65 × 7 — where does the decimal point go? (a) 4.55 (b) 0.0455 (c) 45.5 (d) 0.455
  19. 19.5.8 × 1.8 — where does the decimal point go? (a) 10.44 (b) 0.1044 (c) 104.4 (d) 1.044
  20. 20.2.6 × 0.2 — where does the decimal point go? (a) 0.0052 (b) 5.2 (c) 0.052 (d) 0.52
  21. 21.0.63 × 3 — where does the decimal point go? (a) 0.0189 (b) 1.89 (c) 18.9 (d) 0.189
  22. 22.1.2 × 3.3 — where does the decimal point go? (a) 3.96 (b) 0.396 (c) 0.0396 (d) 39.6
  23. 23.2.4 × 28 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 672 (d) 67.2
  24. 24.0.28 × 0.4 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 0.00112 (d) 1.12
  25. 25.6.7 × 1.6 — where does the decimal point go? (a) 10.72 (b) 1.072 (c) 0.1072 (d) 107.2
  26. 26.0.68 × 14 — where does the decimal point go? (a) 0.952 (b) 95.2 (c) 0.0952 (d) 9.52
  27. 27.3.5 × 49 — where does the decimal point go? (a) 1715 (b) 1.715 (c) 171.5 (d) 17.15
  28. 28.0.67 × 36 — where does the decimal point go? (a) 0.2412 (b) 2.412 (c) 241.2 (d) 24.12
  29. 29.0.94 × 2 — where does the decimal point go? (a) 1.88 (b) 0.188 (c) 0.0188 (d) 18.8
  30. 30.0.21 × 3.7 — where does the decimal point go? (a) 0.00777 (b) 7.77 (c) 0.0777 (d) 0.777
  31. 31.8.3 × 1.3 — where does the decimal point go? (a) 107.9 (b) 0.1079 (c) 1.079 (d) 10.79
  32. 32.7.7 × 11 — where does the decimal point go? (a) 0.847 (b) 8.47 (c) 847 (d) 84.7
  33. 33.3.1 × 9 — where does the decimal point go? (a) 27.9 (b) 0.279 (c) 279 (d) 2.79
  34. 34.5.9 × 3 — where does the decimal point go? (a) 177 (b) 17.7 (c) 0.177 (d) 1.77
  35. 35.5.2 × 3 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 15.6 (d) 156
  36. 36.5.2 × 3.9 — where does the decimal point go? (a) 2.028 (b) 202.8 (c) 20.28 (d) 0.2028
  37. 37.0.17 × 27 — where does the decimal point go? (a) 4.59 (b) 0.0459 (c) 45.9 (d) 0.459
  38. 38.0.17 × 1.7 — where does the decimal point go? (a) 0.0289 (b) 2.89 (c) 0.00289 (d) 0.289
  39. 39.0.91 × 3.8 — where does the decimal point go? (a) 34.58 (b) 0.3458 (c) 3.458 (d) 0.03458
  40. 40.0.16 × 3.6 — where does the decimal point go? (a) 0.0576 (b) 0.00576 (c) 0.576 (d) 5.76

Answer key

  1. 1.16
  2. 1.767
  3. 0.96
  4. 5.2
  5. 4.02
  6. 12.74
  7. 30.34
  8. 8.82
  9. 5.88
  10. 25.2
  11. 321.2
  12. 59.5
  13. 4.32
  14. 16.15
  15. 5.53
  16. 2.92
  17. 0.795
  18. 4.55
  19. 10.44
  20. 0.52
  21. 1.89
  22. 3.96
  23. 67.2
  24. 0.112
  25. 10.72
  26. 9.52
  27. 171.5
  28. 24.12
  29. 1.88
  30. 0.777
  31. 10.79
  32. 84.7
  33. 27.9
  34. 17.7
  35. 15.6
  36. 20.28
  37. 4.59
  38. 0.289
  39. 3.458
  40. 0.576

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