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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 48 · 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. 1.0.41 × 0.8 — where does the decimal point go? (a) 3.28 (b) 0.0328 (c) 0.328 (d) 0.00328
  2. 2.0.24 × 3.3 — where does the decimal point go? (a) 0.00792 (b) 0.0792 (c) 0.792 (d) 7.92
  3. 3.0.27 × 48 — where does the decimal point go? (a) 12.96 (b) 129.6 (c) 1.296 (d) 0.1296
  4. 4.0.82 × 0.2 — where does the decimal point go? (a) 1.64 (b) 0.00164 (c) 0.0164 (d) 0.164
  5. 5.0.51 × 3.3 — where does the decimal point go? (a) 0.1683 (b) 0.01683 (c) 1.683 (d) 16.83
  6. 6.5.3 × 24 — where does the decimal point go? (a) 127.2 (b) 1.272 (c) 12.72 (d) 1272
  7. 7.2.6 × 3.7 — where does the decimal point go? (a) 0.962 (b) 9.62 (c) 0.0962 (d) 96.2
  8. 8.3.1 × 21 — where does the decimal point go? (a) 0.651 (b) 65.1 (c) 651 (d) 6.51
  9. 9.6.1 × 0.5 — where does the decimal point go? (a) 30.5 (b) 0.305 (c) 3.05 (d) 0.0305
  10. 10.0.53 × 2 — where does the decimal point go? (a) 1.06 (b) 0.106 (c) 10.6 (d) 0.0106
  11. 11.2.1 × 5 — where does the decimal point go? (a) 0.105 (b) 10.5 (c) 105 (d) 1.05
  12. 12.1.8 × 2.9 — where does the decimal point go? (a) 0.522 (b) 52.2 (c) 0.0522 (d) 5.22
  13. 13.8.2 × 1.4 — where does the decimal point go? (a) 1.148 (b) 0.1148 (c) 114.8 (d) 11.48
  14. 14.0.93 × 42 — where does the decimal point go? (a) 390.6 (b) 0.3906 (c) 39.06 (d) 3.906
  15. 15.2.2 × 4 — where does the decimal point go? (a) 88 (b) 8.8 (c) 0.88 (d) 0.088
  16. 16.0.81 × 34 — where does the decimal point go? (a) 2.754 (b) 27.54 (c) 275.4 (d) 0.2754
  17. 17.2.8 × 6 — where does the decimal point go? (a) 16.8 (b) 168 (c) 0.168 (d) 1.68
  18. 18.8.9 × 6 — where does the decimal point go? (a) 53.4 (b) 0.534 (c) 534 (d) 5.34
  19. 19.0.87 × 38 — where does the decimal point go? (a) 0.3306 (b) 3.306 (c) 330.6 (d) 33.06
  20. 20.0.97 × 0.9 — where does the decimal point go? (a) 8.73 (b) 0.00873 (c) 0.873 (d) 0.0873
  21. 21.2.3 × 0.8 — where does the decimal point go? (a) 0.184 (b) 1.84 (c) 18.4 (d) 0.0184
  22. 22.0.32 × 14 — where does the decimal point go? (a) 0.448 (b) 44.8 (c) 0.0448 (d) 4.48
  23. 23.9.2 × 0.4 — where does the decimal point go? (a) 0.0368 (b) 3.68 (c) 36.8 (d) 0.368
  24. 24.8.2 × 0.8 — where does the decimal point go? (a) 0.656 (b) 0.0656 (c) 6.56 (d) 65.6
  25. 25.0.22 × 2.9 — where does the decimal point go? (a) 0.0638 (b) 0.638 (c) 0.00638 (d) 6.38
  26. 26.0.73 × 5 — where does the decimal point go? (a) 3.65 (b) 36.5 (c) 0.0365 (d) 0.365
  27. 27.4.1 × 0.4 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 16.4 (d) 0.0164
  28. 28.7.6 × 18 — where does the decimal point go? (a) 13.68 (b) 136.8 (c) 1368 (d) 1.368
  29. 29.0.63 × 33 — where does the decimal point go? (a) 0.2079 (b) 207.9 (c) 20.79 (d) 2.079
  30. 30.2.8 × 46 — where does the decimal point go? (a) 1.288 (b) 12.88 (c) 128.8 (d) 1288
  31. 31.7.6 × 8 — where does the decimal point go? (a) 6.08 (b) 60.8 (c) 0.608 (d) 608
  32. 32.6.8 × 7 — where does the decimal point go? (a) 476 (b) 0.476 (c) 4.76 (d) 47.6
  33. 33.7.2 × 7 — where does the decimal point go? (a) 0.504 (b) 50.4 (c) 504 (d) 5.04
  34. 34.2.8 × 0.8 — where does the decimal point go? (a) 0.0224 (b) 0.224 (c) 22.4 (d) 2.24
  35. 35.2.5 × 7 — where does the decimal point go? (a) 1.75 (b) 0.175 (c) 175 (d) 17.5
  36. 36.9.1 × 24 — where does the decimal point go? (a) 2184 (b) 218.4 (c) 2.184 (d) 21.84
  37. 37.0.86 × 0.3 — where does the decimal point go? (a) 0.0258 (b) 0.00258 (c) 0.258 (d) 2.58
  38. 38.2.7 × 0.6 — where does the decimal point go? (a) 1.62 (b) 16.2 (c) 0.0162 (d) 0.162
  39. 39.0.22 × 0.2 — where does the decimal point go? (a) 0.044 (b) 0.44 (c) 0.0044 (d) 0.00044
  40. 40.0.55 × 3 — where does the decimal point go? (a) 16.5 (b) 0.165 (c) 0.0165 (d) 1.65

Answer key

  1. 0.328
  2. 0.792
  3. 12.96
  4. 0.164
  5. 1.683
  6. 127.2
  7. 9.62
  8. 65.1
  9. 3.05
  10. 1.06
  11. 10.5
  12. 5.22
  13. 11.48
  14. 39.06
  15. 8.8
  16. 27.54
  17. 16.8
  18. 53.4
  19. 33.06
  20. 0.873
  21. 1.84
  22. 4.48
  23. 3.68
  24. 6.56
  25. 0.638
  26. 3.65
  27. 1.64
  28. 136.8
  29. 20.79
  30. 128.8
  31. 60.8
  32. 47.6
  33. 50.4
  34. 2.24
  35. 17.5
  36. 218.4
  37. 0.258
  38. 1.62
  39. 0.044
  40. 1.65

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