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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 622 · 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. 1.4.4 × 3.8 — where does the decimal point go? (a) 167.2 (b) 0.1672 (c) 16.72 (d) 1.672
  2. 2.0.59 × 8 — where does the decimal point go? (a) 0.472 (b) 0.0472 (c) 47.2 (d) 4.72
  3. 3.1.6 × 31 — where does the decimal point go? (a) 4.96 (b) 49.6 (c) 0.496 (d) 496
  4. 4.2.4 × 3 — where does the decimal point go? (a) 0.72 (b) 72 (c) 0.072 (d) 7.2
  5. 5.3.1 × 2 — where does the decimal point go? (a) 6.2 (b) 0.62 (c) 0.062 (d) 62
  6. 6.1.9 × 0.8 — where does the decimal point go? (a) 0.0152 (b) 15.2 (c) 0.152 (d) 1.52
  7. 7.9.1 × 0.6 — where does the decimal point go? (a) 5.46 (b) 0.0546 (c) 0.546 (d) 54.6
  8. 8.0.63 × 0.7 — where does the decimal point go? (a) 0.441 (b) 0.00441 (c) 4.41 (d) 0.0441
  9. 9.0.84 × 3.3 — where does the decimal point go? (a) 2.772 (b) 0.2772 (c) 0.02772 (d) 27.72
  10. 10.0.66 × 0.2 — where does the decimal point go? (a) 0.00132 (b) 0.132 (c) 1.32 (d) 0.0132
  11. 11.9.3 × 16 — where does the decimal point go? (a) 148.8 (b) 1.488 (c) 1488 (d) 14.88
  12. 12.4.6 × 33 — where does the decimal point go? (a) 151.8 (b) 1518 (c) 1.518 (d) 15.18
  13. 13.4.5 × 21 — where does the decimal point go? (a) 0.945 (b) 945 (c) 9.45 (d) 94.5
  14. 14.2.7 × 23 — where does the decimal point go? (a) 6.21 (b) 62.1 (c) 621 (d) 0.621
  15. 15.0.32 × 32 — where does the decimal point go? (a) 102.4 (b) 1.024 (c) 10.24 (d) 0.1024
  16. 16.0.78 × 0.4 — where does the decimal point go? (a) 3.12 (b) 0.00312 (c) 0.0312 (d) 0.312
  17. 17.0.78 × 0.8 — where does the decimal point go? (a) 0.00624 (b) 0.0624 (c) 0.624 (d) 6.24
  18. 18.0.46 × 38 — where does the decimal point go? (a) 174.8 (b) 17.48 (c) 0.1748 (d) 1.748
  19. 19.0.67 × 2 — where does the decimal point go? (a) 0.0134 (b) 13.4 (c) 1.34 (d) 0.134
  20. 20.4.2 × 0.3 — where does the decimal point go? (a) 1.26 (b) 0.0126 (c) 0.126 (d) 12.6
  21. 21.5.4 × 3 — where does the decimal point go? (a) 1.62 (b) 0.162 (c) 162 (d) 16.2
  22. 22.0.45 × 0.5 — where does the decimal point go? (a) 2.25 (b) 0.00225 (c) 0.225 (d) 0.0225
  23. 23.0.94 × 24 — where does the decimal point go? (a) 22.56 (b) 0.2256 (c) 2.256 (d) 225.6
  24. 24.2.4 × 4 — where does the decimal point go? (a) 96 (b) 9.6 (c) 0.096 (d) 0.96
  25. 25.7.6 × 0.6 — where does the decimal point go? (a) 0.0456 (b) 4.56 (c) 0.456 (d) 45.6
  26. 26.5.9 × 4.6 — where does the decimal point go? (a) 0.2714 (b) 27.14 (c) 2.714 (d) 271.4
  27. 27.0.68 × 13 — where does the decimal point go? (a) 0.0884 (b) 8.84 (c) 88.4 (d) 0.884
  28. 28.9.4 × 16 — where does the decimal point go? (a) 15.04 (b) 1504 (c) 150.4 (d) 1.504
  29. 29.6.9 × 0.6 — where does the decimal point go? (a) 41.4 (b) 0.414 (c) 4.14 (d) 0.0414
  30. 30.0.68 × 0.4 — where does the decimal point go? (a) 0.00272 (b) 0.272 (c) 0.0272 (d) 2.72
  31. 31.0.27 × 7 — where does the decimal point go? (a) 1.89 (b) 18.9 (c) 0.0189 (d) 0.189
  32. 32.1.3 × 2 — where does the decimal point go? (a) 2.6 (b) 0.26 (c) 26 (d) 0.026
  33. 33.0.13 × 0.3 — where does the decimal point go? (a) 0.00039 (b) 0.0039 (c) 0.39 (d) 0.039
  34. 34.1.9 × 28 — where does the decimal point go? (a) 53.2 (b) 5.32 (c) 0.532 (d) 532
  35. 35.3.7 × 3 — where does the decimal point go? (a) 111 (b) 0.111 (c) 11.1 (d) 1.11
  36. 36.6.3 × 4.2 — where does the decimal point go? (a) 2.646 (b) 264.6 (c) 26.46 (d) 0.2646
  37. 37.0.67 × 0.4 — where does the decimal point go? (a) 0.268 (b) 0.00268 (c) 2.68 (d) 0.0268
  38. 38.0.12 × 0.2 — where does the decimal point go? (a) 0.0024 (b) 0.024 (c) 0.24 (d) 0.00024
  39. 39.2.8 × 0.8 — where does the decimal point go? (a) 0.224 (b) 0.0224 (c) 2.24 (d) 22.4
  40. 40.6.2 × 2.7 — where does the decimal point go? (a) 1.674 (b) 0.1674 (c) 167.4 (d) 16.74

Answer key

  1. 16.72
  2. 4.72
  3. 49.6
  4. 7.2
  5. 6.2
  6. 1.52
  7. 5.46
  8. 0.441
  9. 2.772
  10. 0.132
  11. 148.8
  12. 151.8
  13. 94.5
  14. 62.1
  15. 10.24
  16. 0.312
  17. 0.624
  18. 17.48
  19. 1.34
  20. 1.26
  21. 16.2
  22. 0.225
  23. 22.56
  24. 9.6
  25. 4.56
  26. 27.14
  27. 8.84
  28. 150.4
  29. 4.14
  30. 0.272
  31. 1.89
  32. 2.6
  33. 0.039
  34. 53.2
  35. 11.1
  36. 26.46
  37. 0.268
  38. 0.024
  39. 2.24
  40. 16.74

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