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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 247 · 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. 1.0.53 × 26 — where does the decimal point go? (a) 0.1378 (b) 13.78 (c) 137.8 (d) 1.378
  2. 2.0.68 × 0.8 — where does the decimal point go? (a) 0.00544 (b) 0.544 (c) 0.0544 (d) 5.44
  3. 3.2.7 × 22 — where does the decimal point go? (a) 594 (b) 5.94 (c) 59.4 (d) 0.594
  4. 4.1.3 × 9 — where does the decimal point go? (a) 1.17 (b) 11.7 (c) 0.117 (d) 117
  5. 5.0.45 × 27 — where does the decimal point go? (a) 1.215 (b) 12.15 (c) 121.5 (d) 0.1215
  6. 6.6.9 × 27 — where does the decimal point go? (a) 186.3 (b) 1863 (c) 1.863 (d) 18.63
  7. 7.0.47 × 1.8 — where does the decimal point go? (a) 0.846 (b) 0.00846 (c) 8.46 (d) 0.0846
  8. 8.7.7 × 0.4 — where does the decimal point go? (a) 0.0308 (b) 0.308 (c) 30.8 (d) 3.08
  9. 9.0.74 × 8 — where does the decimal point go? (a) 0.592 (b) 5.92 (c) 0.0592 (d) 59.2
  10. 10.8.7 × 8 — where does the decimal point go? (a) 6.96 (b) 0.696 (c) 69.6 (d) 696
  11. 11.1.8 × 34 — where does the decimal point go? (a) 0.612 (b) 6.12 (c) 61.2 (d) 612
  12. 12.8.9 × 0.5 — where does the decimal point go? (a) 4.45 (b) 44.5 (c) 0.445 (d) 0.0445
  13. 13.7.9 × 0.6 — where does the decimal point go? (a) 0.474 (b) 0.0474 (c) 47.4 (d) 4.74
  14. 14.0.89 × 0.4 — where does the decimal point go? (a) 0.00356 (b) 3.56 (c) 0.0356 (d) 0.356
  15. 15.0.69 × 4 — where does the decimal point go? (a) 0.276 (b) 27.6 (c) 0.0276 (d) 2.76
  16. 16.0.58 × 14 — where does the decimal point go? (a) 0.812 (b) 0.0812 (c) 81.2 (d) 8.12
  17. 17.8.4 × 7 — where does the decimal point go? (a) 5.88 (b) 58.8 (c) 0.588 (d) 588
  18. 18.1.2 × 7 — where does the decimal point go? (a) 0.84 (b) 8.4 (c) 0.084 (d) 84
  19. 19.0.95 × 39 — where does the decimal point go? (a) 3.705 (b) 0.3705 (c) 37.05 (d) 370.5
  20. 20.3.2 × 4 — where does the decimal point go? (a) 1.28 (b) 12.8 (c) 0.128 (d) 128
  21. 21.6.3 × 3 — where does the decimal point go? (a) 0.189 (b) 18.9 (c) 1.89 (d) 189
  22. 22.0.12 × 7 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 0.0084 (d) 0.84
  23. 23.6.4 × 28 — where does the decimal point go? (a) 179.2 (b) 1792 (c) 17.92 (d) 1.792
  24. 24.0.17 × 3.3 — where does the decimal point go? (a) 0.0561 (b) 5.61 (c) 0.00561 (d) 0.561
  25. 25.2.9 × 0.2 — where does the decimal point go? (a) 0.58 (b) 5.8 (c) 0.0058 (d) 0.058
  26. 26.9.9 × 0.2 — where does the decimal point go? (a) 19.8 (b) 1.98 (c) 0.0198 (d) 0.198
  27. 27.0.12 × 36 — where does the decimal point go? (a) 4.32 (b) 0.432 (c) 43.2 (d) 0.0432
  28. 28.0.34 × 2 — where does the decimal point go? (a) 6.8 (b) 0.68 (c) 0.068 (d) 0.0068
  29. 29.9.8 × 2.4 — where does the decimal point go? (a) 235.2 (b) 0.2352 (c) 2.352 (d) 23.52
  30. 30.0.63 × 0.9 — where does the decimal point go? (a) 0.0567 (b) 0.567 (c) 5.67 (d) 0.00567
  31. 31.0.77 × 39 — where does the decimal point go? (a) 3.003 (b) 300.3 (c) 30.03 (d) 0.3003
  32. 32.2.9 × 0.9 — where does the decimal point go? (a) 2.61 (b) 0.261 (c) 26.1 (d) 0.0261
  33. 33.7.4 × 3.2 — where does the decimal point go? (a) 236.8 (b) 23.68 (c) 2.368 (d) 0.2368
  34. 34.8.3 × 4 — where does the decimal point go? (a) 33.2 (b) 3.32 (c) 332 (d) 0.332
  35. 35.4.6 × 3.2 — where does the decimal point go? (a) 0.1472 (b) 147.2 (c) 1.472 (d) 14.72
  36. 36.9.8 × 0.2 — where does the decimal point go? (a) 0.0196 (b) 0.196 (c) 19.6 (d) 1.96
  37. 37.9.1 × 25 — where does the decimal point go? (a) 227.5 (b) 2275 (c) 22.75 (d) 2.275
  38. 38.3.1 × 7 — where does the decimal point go? (a) 21.7 (b) 0.217 (c) 2.17 (d) 217
  39. 39.4.1 × 0.5 — where does the decimal point go? (a) 2.05 (b) 20.5 (c) 0.0205 (d) 0.205
  40. 40.0.12 × 49 — where does the decimal point go? (a) 0.0588 (b) 5.88 (c) 58.8 (d) 0.588

Answer key

  1. 13.78
  2. 0.544
  3. 59.4
  4. 11.7
  5. 12.15
  6. 186.3
  7. 0.846
  8. 3.08
  9. 5.92
  10. 69.6
  11. 61.2
  12. 4.45
  13. 4.74
  14. 0.356
  15. 2.76
  16. 8.12
  17. 58.8
  18. 8.4
  19. 37.05
  20. 12.8
  21. 18.9
  22. 0.84
  23. 179.2
  24. 0.561
  25. 0.58
  26. 1.98
  27. 4.32
  28. 0.68
  29. 23.52
  30. 0.567
  31. 30.03
  32. 2.61
  33. 23.68
  34. 33.2
  35. 14.72
  36. 1.96
  37. 227.5
  38. 21.7
  39. 2.05
  40. 5.88

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