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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 287 · 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. 1.5.5 × 49 — where does the decimal point go? (a) 2.695 (b) 26.95 (c) 2695 (d) 269.5
  2. 2.0.67 × 0.8 — where does the decimal point go? (a) 0.0536 (b) 5.36 (c) 0.536 (d) 0.00536
  3. 3.0.23 × 1.8 — where does the decimal point go? (a) 4.14 (b) 0.0414 (c) 0.414 (d) 0.00414
  4. 4.0.63 × 1.6 — where does the decimal point go? (a) 10.08 (b) 0.01008 (c) 0.1008 (d) 1.008
  5. 5.2.9 × 4.6 — where does the decimal point go? (a) 13.34 (b) 1.334 (c) 0.1334 (d) 133.4
  6. 6.0.32 × 0.8 — where does the decimal point go? (a) 0.00256 (b) 0.0256 (c) 0.256 (d) 2.56
  7. 7.9.8 × 3.3 — where does the decimal point go? (a) 32.34 (b) 0.3234 (c) 3.234 (d) 323.4
  8. 8.0.33 × 2 — where does the decimal point go? (a) 0.66 (b) 0.0066 (c) 0.066 (d) 6.6
  9. 9.0.57 × 19 — where does the decimal point go? (a) 108.3 (b) 0.1083 (c) 10.83 (d) 1.083
  10. 10.0.88 × 0.3 — where does the decimal point go? (a) 0.0264 (b) 0.264 (c) 2.64 (d) 0.00264
  11. 11.0.72 × 0.2 — where does the decimal point go? (a) 0.0144 (b) 0.00144 (c) 1.44 (d) 0.144
  12. 12.2.7 × 0.2 — where does the decimal point go? (a) 0.0054 (b) 0.54 (c) 5.4 (d) 0.054
  13. 13.8.6 × 2 — where does the decimal point go? (a) 17.2 (b) 0.172 (c) 172 (d) 1.72
  14. 14.0.66 × 0.8 — where does the decimal point go? (a) 5.28 (b) 0.00528 (c) 0.528 (d) 0.0528
  15. 15.9.7 × 1.7 — where does the decimal point go? (a) 0.1649 (b) 16.49 (c) 164.9 (d) 1.649
  16. 16.5.3 × 21 — where does the decimal point go? (a) 1.113 (b) 11.13 (c) 111.3 (d) 1113
  17. 17.1.8 × 7 — where does the decimal point go? (a) 1.26 (b) 0.126 (c) 12.6 (d) 126
  18. 18.0.88 × 33 — where does the decimal point go? (a) 0.2904 (b) 29.04 (c) 290.4 (d) 2.904
  19. 19.0.88 × 4.6 — where does the decimal point go? (a) 0.04048 (b) 40.48 (c) 0.4048 (d) 4.048
  20. 20.6.3 × 8 — where does the decimal point go? (a) 504 (b) 0.504 (c) 5.04 (d) 50.4
  21. 21.3.6 × 38 — where does the decimal point go? (a) 13.68 (b) 1.368 (c) 1368 (d) 136.8
  22. 22.2.9 × 0.9 — where does the decimal point go? (a) 26.1 (b) 0.0261 (c) 2.61 (d) 0.261
  23. 23.0.18 × 7 — where does the decimal point go? (a) 12.6 (b) 0.126 (c) 0.0126 (d) 1.26
  24. 24.0.36 × 8 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 0.0288 (d) 28.8
  25. 25.0.39 × 8 — where does the decimal point go? (a) 0.0312 (b) 0.312 (c) 31.2 (d) 3.12
  26. 26.0.63 × 5 — where does the decimal point go? (a) 31.5 (b) 3.15 (c) 0.315 (d) 0.0315
  27. 27.9.8 × 13 — where does the decimal point go? (a) 1.274 (b) 127.4 (c) 12.74 (d) 1274
  28. 28.5.2 × 7 — where does the decimal point go? (a) 0.364 (b) 3.64 (c) 364 (d) 36.4
  29. 29.0.66 × 22 — where does the decimal point go? (a) 14.52 (b) 1.452 (c) 0.1452 (d) 145.2
  30. 30.0.54 × 0.3 — where does the decimal point go? (a) 0.0162 (b) 0.162 (c) 1.62 (d) 0.00162
  31. 31.4.4 × 7 — where does the decimal point go? (a) 30.8 (b) 3.08 (c) 0.308 (d) 308
  32. 32.0.83 × 0.3 — where does the decimal point go? (a) 0.249 (b) 0.0249 (c) 0.00249 (d) 2.49
  33. 33.3.7 × 4.2 — where does the decimal point go? (a) 155.4 (b) 0.1554 (c) 1.554 (d) 15.54
  34. 34.0.28 × 49 — where does the decimal point go? (a) 0.1372 (b) 1.372 (c) 137.2 (d) 13.72
  35. 35.2.9 × 0.4 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.0116 (d) 0.116
  36. 36.5.2 × 8 — where does the decimal point go? (a) 416 (b) 0.416 (c) 4.16 (d) 41.6
  37. 37.6.8 × 1.3 — where does the decimal point go? (a) 0.884 (b) 88.4 (c) 8.84 (d) 0.0884
  38. 38.6.6 × 49 — where does the decimal point go? (a) 3234 (b) 323.4 (c) 3.234 (d) 32.34
  39. 39.9.7 × 0.9 — where does the decimal point go? (a) 0.873 (b) 87.3 (c) 0.0873 (d) 8.73
  40. 40.5.8 × 0.7 — where does the decimal point go? (a) 0.406 (b) 4.06 (c) 0.0406 (d) 40.6

Answer key

  1. 269.5
  2. 0.536
  3. 0.414
  4. 1.008
  5. 13.34
  6. 0.256
  7. 32.34
  8. 0.66
  9. 10.83
  10. 0.264
  11. 0.144
  12. 0.54
  13. 17.2
  14. 0.528
  15. 16.49
  16. 111.3
  17. 12.6
  18. 29.04
  19. 4.048
  20. 50.4
  21. 136.8
  22. 2.61
  23. 1.26
  24. 2.88
  25. 3.12
  26. 3.15
  27. 127.4
  28. 36.4
  29. 14.52
  30. 0.162
  31. 30.8
  32. 0.249
  33. 15.54
  34. 13.72
  35. 1.16
  36. 41.6
  37. 8.84
  38. 323.4
  39. 8.73
  40. 4.06

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