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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 577 · 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. 1.6.8 × 0.9 — where does the decimal point go? (a) 0.0612 (b) 0.612 (c) 61.2 (d) 6.12
  2. 2.2.3 × 4 — where does the decimal point go? (a) 0.092 (b) 0.92 (c) 92 (d) 9.2
  3. 3.0.96 × 37 — where does the decimal point go? (a) 35.52 (b) 3.552 (c) 0.3552 (d) 355.2
  4. 4.1.3 × 19 — where does the decimal point go? (a) 24.7 (b) 0.247 (c) 2.47 (d) 247
  5. 5.3.3 × 1.7 — where does the decimal point go? (a) 0.561 (b) 56.1 (c) 0.0561 (d) 5.61
  6. 6.7.1 × 2.1 — where does the decimal point go? (a) 14.91 (b) 1.491 (c) 0.1491 (d) 149.1
  7. 7.0.22 × 4.7 — where does the decimal point go? (a) 10.34 (b) 0.1034 (c) 1.034 (d) 0.01034
  8. 8.0.93 × 3 — where does the decimal point go? (a) 27.9 (b) 0.279 (c) 0.0279 (d) 2.79
  9. 9.3.9 × 0.7 — where does the decimal point go? (a) 27.3 (b) 0.273 (c) 0.0273 (d) 2.73
  10. 10.1.3 × 31 — where does the decimal point go? (a) 4.03 (b) 0.403 (c) 403 (d) 40.3
  11. 11.0.21 × 0.4 — where does the decimal point go? (a) 0.00084 (b) 0.0084 (c) 0.084 (d) 0.84
  12. 12.0.41 × 2.9 — where does the decimal point go? (a) 1.189 (b) 0.01189 (c) 11.89 (d) 0.1189
  13. 13.0.62 × 2.6 — where does the decimal point go? (a) 16.12 (b) 1.612 (c) 0.01612 (d) 0.1612
  14. 14.0.66 × 4 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 0.0264 (d) 26.4
  15. 15.4.1 × 8 — where does the decimal point go? (a) 3.28 (b) 328 (c) 0.328 (d) 32.8
  16. 16.7.4 × 3 — where does the decimal point go? (a) 222 (b) 22.2 (c) 2.22 (d) 0.222
  17. 17.4.2 × 12 — where does the decimal point go? (a) 0.504 (b) 50.4 (c) 5.04 (d) 504
  18. 18.0.27 × 25 — where does the decimal point go? (a) 6.75 (b) 0.675 (c) 67.5 (d) 0.0675
  19. 19.0.19 × 0.3 — where does the decimal point go? (a) 0.057 (b) 0.0057 (c) 0.57 (d) 0.00057
  20. 20.0.27 × 41 — where does the decimal point go? (a) 1.107 (b) 0.1107 (c) 11.07 (d) 110.7
  21. 21.7.4 × 0.2 — where does the decimal point go? (a) 14.8 (b) 1.48 (c) 0.0148 (d) 0.148
  22. 22.8.9 × 3.2 — where does the decimal point go? (a) 284.8 (b) 2.848 (c) 28.48 (d) 0.2848
  23. 23.5.9 × 9 — where does the decimal point go? (a) 5.31 (b) 0.531 (c) 531 (d) 53.1
  24. 24.0.81 × 3.9 — where does the decimal point go? (a) 3.159 (b) 31.59 (c) 0.3159 (d) 0.03159
  25. 25.5.7 × 0.7 — where does the decimal point go? (a) 3.99 (b) 39.9 (c) 0.0399 (d) 0.399
  26. 26.5.6 × 2 — where does the decimal point go? (a) 0.112 (b) 112 (c) 1.12 (d) 11.2
  27. 27.1.8 × 0.9 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 0.0162 (d) 16.2
  28. 28.1.7 × 0.3 — where does the decimal point go? (a) 5.1 (b) 0.0051 (c) 0.051 (d) 0.51
  29. 29.5.4 × 19 — where does the decimal point go? (a) 10.26 (b) 1026 (c) 1.026 (d) 102.6
  30. 30.6.7 × 44 — where does the decimal point go? (a) 29.48 (b) 294.8 (c) 2948 (d) 2.948
  31. 31.8.6 × 11 — where does the decimal point go? (a) 0.946 (b) 946 (c) 94.6 (d) 9.46
  32. 32.3.3 × 41 — where does the decimal point go? (a) 1.353 (b) 13.53 (c) 1353 (d) 135.3
  33. 33.0.25 × 3 — where does the decimal point go? (a) 0.075 (b) 0.0075 (c) 0.75 (d) 7.5
  34. 34.5.9 × 4 — where does the decimal point go? (a) 236 (b) 2.36 (c) 0.236 (d) 23.6
  35. 35.0.44 × 4.6 — where does the decimal point go? (a) 0.2024 (b) 0.02024 (c) 20.24 (d) 2.024
  36. 36.0.28 × 0.8 — where does the decimal point go? (a) 0.0224 (b) 0.224 (c) 2.24 (d) 0.00224
  37. 37.3.9 × 3.3 — where does the decimal point go? (a) 128.7 (b) 0.1287 (c) 12.87 (d) 1.287
  38. 38.0.73 × 9 — where does the decimal point go? (a) 0.0657 (b) 6.57 (c) 0.657 (d) 65.7
  39. 39.3.3 × 3.3 — where does the decimal point go? (a) 1.089 (b) 108.9 (c) 10.89 (d) 0.1089
  40. 40.0.43 × 14 — where does the decimal point go? (a) 0.602 (b) 0.0602 (c) 6.02 (d) 60.2

Answer key

  1. 6.12
  2. 9.2
  3. 35.52
  4. 24.7
  5. 5.61
  6. 14.91
  7. 1.034
  8. 2.79
  9. 2.73
  10. 40.3
  11. 0.084
  12. 1.189
  13. 1.612
  14. 2.64
  15. 32.8
  16. 22.2
  17. 50.4
  18. 6.75
  19. 0.057
  20. 11.07
  21. 1.48
  22. 28.48
  23. 53.1
  24. 3.159
  25. 3.99
  26. 11.2
  27. 1.62
  28. 0.51
  29. 102.6
  30. 294.8
  31. 94.6
  32. 135.3
  33. 0.75
  34. 23.6
  35. 2.024
  36. 0.224
  37. 12.87
  38. 6.57
  39. 10.89
  40. 6.02

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