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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 304 · 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. 1.3.1 × 5 — where does the decimal point go? (a) 0.155 (b) 15.5 (c) 1.55 (d) 155
  2. 2.8.2 × 0.3 — where does the decimal point go? (a) 0.246 (b) 0.0246 (c) 24.6 (d) 2.46
  3. 3.8.3 × 45 — where does the decimal point go? (a) 3735 (b) 37.35 (c) 373.5 (d) 3.735
  4. 4.0.98 × 3 — where does the decimal point go? (a) 29.4 (b) 0.0294 (c) 0.294 (d) 2.94
  5. 5.0.73 × 0.4 — where does the decimal point go? (a) 0.292 (b) 0.00292 (c) 2.92 (d) 0.0292
  6. 6.5.2 × 0.7 — where does the decimal point go? (a) 0.364 (b) 3.64 (c) 0.0364 (d) 36.4
  7. 7.6.6 × 0.2 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.0132 (d) 0.132
  8. 8.0.36 × 3.7 — where does the decimal point go? (a) 0.01332 (b) 0.1332 (c) 13.32 (d) 1.332
  9. 9.3.4 × 4.6 — where does the decimal point go? (a) 1.564 (b) 156.4 (c) 15.64 (d) 0.1564
  10. 10.0.12 × 43 — where does the decimal point go? (a) 51.6 (b) 0.516 (c) 0.0516 (d) 5.16
  11. 11.0.44 × 13 — where does the decimal point go? (a) 0.572 (b) 5.72 (c) 0.0572 (d) 57.2
  12. 12.0.26 × 0.8 — where does the decimal point go? (a) 0.208 (b) 2.08 (c) 0.0208 (d) 0.00208
  13. 13.0.77 × 1.8 — where does the decimal point go? (a) 0.1386 (b) 0.01386 (c) 13.86 (d) 1.386
  14. 14.6.2 × 3.7 — where does the decimal point go? (a) 22.94 (b) 0.2294 (c) 229.4 (d) 2.294
  15. 15.0.53 × 44 — where does the decimal point go? (a) 2.332 (b) 0.2332 (c) 233.2 (d) 23.32
  16. 16.6.9 × 39 — where does the decimal point go? (a) 26.91 (b) 2.691 (c) 2691 (d) 269.1
  17. 17.0.41 × 4.8 — where does the decimal point go? (a) 1.968 (b) 0.01968 (c) 19.68 (d) 0.1968
  18. 18.0.37 × 5 — where does the decimal point go? (a) 0.185 (b) 1.85 (c) 0.0185 (d) 18.5
  19. 19.0.12 × 32 — where does the decimal point go? (a) 3.84 (b) 0.384 (c) 0.0384 (d) 38.4
  20. 20.6.7 × 1.3 — where does the decimal point go? (a) 8.71 (b) 0.0871 (c) 87.1 (d) 0.871
  21. 21.0.49 × 1.7 — where does the decimal point go? (a) 0.00833 (b) 0.0833 (c) 0.833 (d) 8.33
  22. 22.0.62 × 26 — where does the decimal point go? (a) 16.12 (b) 161.2 (c) 0.1612 (d) 1.612
  23. 23.0.96 × 7 — where does the decimal point go? (a) 0.672 (b) 0.0672 (c) 67.2 (d) 6.72
  24. 24.6.3 × 0.8 — where does the decimal point go? (a) 0.504 (b) 0.0504 (c) 50.4 (d) 5.04
  25. 25.0.16 × 3 — where does the decimal point go? (a) 0.48 (b) 0.048 (c) 4.8 (d) 0.0048
  26. 26.2.5 × 3 — where does the decimal point go? (a) 7.5 (b) 0.075 (c) 0.75 (d) 75
  27. 27.3.7 × 6 — where does the decimal point go? (a) 222 (b) 22.2 (c) 0.222 (d) 2.22
  28. 28.8.7 × 7 — where does the decimal point go? (a) 6.09 (b) 0.609 (c) 60.9 (d) 609
  29. 29.3.9 × 5 — where does the decimal point go? (a) 1.95 (b) 195 (c) 19.5 (d) 0.195
  30. 30.3.2 × 0.8 — where does the decimal point go? (a) 0.0256 (b) 0.256 (c) 25.6 (d) 2.56
  31. 31.0.22 × 2.7 — where does the decimal point go? (a) 0.594 (b) 0.0594 (c) 0.00594 (d) 5.94
  32. 32.2.4 × 6 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 144 (d) 1.44
  33. 33.3.6 × 7 — where does the decimal point go? (a) 2.52 (b) 25.2 (c) 0.252 (d) 252
  34. 34.0.66 × 6 — where does the decimal point go? (a) 0.0396 (b) 0.396 (c) 3.96 (d) 39.6
  35. 35.1.6 × 2 — where does the decimal point go? (a) 3.2 (b) 0.032 (c) 32 (d) 0.32
  36. 36.8.5 × 0.7 — where does the decimal point go? (a) 0.0595 (b) 5.95 (c) 0.595 (d) 59.5
  37. 37.2.9 × 8 — where does the decimal point go? (a) 2.32 (b) 23.2 (c) 232 (d) 0.232
  38. 38.0.37 × 3.6 — where does the decimal point go? (a) 0.1332 (b) 0.01332 (c) 13.32 (d) 1.332
  39. 39.0.72 × 0.9 — where does the decimal point go? (a) 0.00648 (b) 0.0648 (c) 6.48 (d) 0.648
  40. 40.0.27 × 0.2 — where does the decimal point go? (a) 0.54 (b) 0.0054 (c) 0.00054 (d) 0.054

Answer key

  1. 15.5
  2. 2.46
  3. 373.5
  4. 2.94
  5. 0.292
  6. 3.64
  7. 1.32
  8. 1.332
  9. 15.64
  10. 5.16
  11. 5.72
  12. 0.208
  13. 1.386
  14. 22.94
  15. 23.32
  16. 269.1
  17. 1.968
  18. 1.85
  19. 3.84
  20. 8.71
  21. 0.833
  22. 16.12
  23. 6.72
  24. 5.04
  25. 0.48
  26. 7.5
  27. 22.2
  28. 60.9
  29. 19.5
  30. 2.56
  31. 0.594
  32. 14.4
  33. 25.2
  34. 3.96
  35. 3.2
  36. 5.95
  37. 23.2
  38. 1.332
  39. 0.648
  40. 0.054

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