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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 905 · 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. 1.3.4 × 0.8 — where does the decimal point go? (a) 27.2 (b) 0.272 (c) 2.72 (d) 0.0272
  2. 2.1.8 × 0.6 — where does the decimal point go? (a) 0.0108 (b) 10.8 (c) 0.108 (d) 1.08
  3. 3.1.2 × 0.4 — where does the decimal point go? (a) 0.0048 (b) 0.048 (c) 4.8 (d) 0.48
  4. 4.0.59 × 5 — where does the decimal point go? (a) 29.5 (b) 0.0295 (c) 0.295 (d) 2.95
  5. 5.0.37 × 3 — where does the decimal point go? (a) 1.11 (b) 0.0111 (c) 11.1 (d) 0.111
  6. 6.2.8 × 41 — where does the decimal point go? (a) 1148 (b) 114.8 (c) 11.48 (d) 1.148
  7. 7.2.4 × 22 — where does the decimal point go? (a) 52.8 (b) 5.28 (c) 0.528 (d) 528
  8. 8.0.63 × 24 — where does the decimal point go? (a) 0.1512 (b) 1.512 (c) 15.12 (d) 151.2
  9. 9.0.69 × 1.6 — where does the decimal point go? (a) 11.04 (b) 1.104 (c) 0.1104 (d) 0.01104
  10. 10.6.3 × 7 — where does the decimal point go? (a) 4.41 (b) 441 (c) 0.441 (d) 44.1
  11. 11.0.52 × 0.4 — where does the decimal point go? (a) 0.00208 (b) 0.0208 (c) 2.08 (d) 0.208
  12. 12.0.74 × 19 — where does the decimal point go? (a) 1.406 (b) 140.6 (c) 0.1406 (d) 14.06
  13. 13.2.3 × 49 — where does the decimal point go? (a) 1127 (b) 112.7 (c) 11.27 (d) 1.127
  14. 14.0.26 × 32 — where does the decimal point go? (a) 0.832 (b) 8.32 (c) 0.0832 (d) 83.2
  15. 15.0.25 × 0.3 — where does the decimal point go? (a) 0.075 (b) 0.75 (c) 0.0075 (d) 0.00075
  16. 16.1.4 × 0.3 — where does the decimal point go? (a) 0.042 (b) 4.2 (c) 0.0042 (d) 0.42
  17. 17.1.3 × 6 — where does the decimal point go? (a) 0.078 (b) 78 (c) 7.8 (d) 0.78
  18. 18.0.96 × 7 — where does the decimal point go? (a) 0.0672 (b) 0.672 (c) 67.2 (d) 6.72
  19. 19.0.84 × 39 — where does the decimal point go? (a) 0.3276 (b) 327.6 (c) 3.276 (d) 32.76
  20. 20.0.44 × 0.6 — where does the decimal point go? (a) 0.0264 (b) 0.264 (c) 2.64 (d) 0.00264
  21. 21.0.94 × 9 — where does the decimal point go? (a) 8.46 (b) 0.846 (c) 84.6 (d) 0.0846
  22. 22.6.7 × 7 — where does the decimal point go? (a) 46.9 (b) 4.69 (c) 469 (d) 0.469
  23. 23.9.6 × 2 — where does the decimal point go? (a) 19.2 (b) 1.92 (c) 0.192 (d) 192
  24. 24.8.1 × 7 — where does the decimal point go? (a) 0.567 (b) 56.7 (c) 567 (d) 5.67
  25. 25.2.4 × 3.6 — where does the decimal point go? (a) 8.64 (b) 0.0864 (c) 86.4 (d) 0.864
  26. 26.7.8 × 12 — where does the decimal point go? (a) 0.936 (b) 93.6 (c) 936 (d) 9.36
  27. 27.1.8 × 0.7 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 0.126 (d) 0.0126
  28. 28.0.24 × 0.7 — where does the decimal point go? (a) 0.168 (b) 0.00168 (c) 0.0168 (d) 1.68
  29. 29.6.8 × 0.9 — where does the decimal point go? (a) 61.2 (b) 0.612 (c) 6.12 (d) 0.0612
  30. 30.6.3 × 11 — where does the decimal point go? (a) 69.3 (b) 0.693 (c) 6.93 (d) 693
  31. 31.0.92 × 9 — where does the decimal point go? (a) 0.0828 (b) 0.828 (c) 82.8 (d) 8.28
  32. 32.0.53 × 43 — where does the decimal point go? (a) 22.79 (b) 0.2279 (c) 2.279 (d) 227.9
  33. 33.0.26 × 0.8 — where does the decimal point go? (a) 0.208 (b) 2.08 (c) 0.0208 (d) 0.00208
  34. 34.0.74 × 1.6 — where does the decimal point go? (a) 0.01184 (b) 11.84 (c) 0.1184 (d) 1.184
  35. 35.7.3 × 4 — where does the decimal point go? (a) 29.2 (b) 292 (c) 0.292 (d) 2.92
  36. 36.0.76 × 46 — where does the decimal point go? (a) 34.96 (b) 0.3496 (c) 3.496 (d) 349.6
  37. 37.0.78 × 1.7 — where does the decimal point go? (a) 13.26 (b) 0.1326 (c) 0.01326 (d) 1.326
  38. 38.1.3 × 12 — where does the decimal point go? (a) 15.6 (b) 0.156 (c) 1.56 (d) 156
  39. 39.5.2 × 9 — where does the decimal point go? (a) 46.8 (b) 4.68 (c) 0.468 (d) 468
  40. 40.2.9 × 3.7 — where does the decimal point go? (a) 0.1073 (b) 10.73 (c) 107.3 (d) 1.073

Answer key

  1. 2.72
  2. 1.08
  3. 0.48
  4. 2.95
  5. 1.11
  6. 114.8
  7. 52.8
  8. 15.12
  9. 1.104
  10. 44.1
  11. 0.208
  12. 14.06
  13. 112.7
  14. 8.32
  15. 0.075
  16. 0.42
  17. 7.8
  18. 6.72
  19. 32.76
  20. 0.264
  21. 8.46
  22. 46.9
  23. 19.2
  24. 56.7
  25. 8.64
  26. 93.6
  27. 1.26
  28. 0.168
  29. 6.12
  30. 69.3
  31. 8.28
  32. 22.79
  33. 0.208
  34. 1.184
  35. 29.2
  36. 34.96
  37. 1.326
  38. 15.6
  39. 46.8
  40. 10.73

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