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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 204 · 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. 1.0.18 × 2.4 — where does the decimal point go? (a) 4.32 (b) 0.0432 (c) 0.00432 (d) 0.432
  2. 2.9.4 × 4 — where does the decimal point go? (a) 37.6 (b) 0.376 (c) 376 (d) 3.76
  3. 3.0.88 × 17 — where does the decimal point go? (a) 149.6 (b) 0.1496 (c) 14.96 (d) 1.496
  4. 4.5.3 × 8 — where does the decimal point go? (a) 424 (b) 4.24 (c) 42.4 (d) 0.424
  5. 5.0.14 × 4 — where does the decimal point go? (a) 5.6 (b) 0.0056 (c) 0.056 (d) 0.56
  6. 6.6.2 × 6 — where does the decimal point go? (a) 3.72 (b) 372 (c) 37.2 (d) 0.372
  7. 7.8.9 × 0.2 — where does the decimal point go? (a) 0.178 (b) 0.0178 (c) 1.78 (d) 17.8
  8. 8.0.94 × 0.8 — where does the decimal point go? (a) 0.752 (b) 7.52 (c) 0.00752 (d) 0.0752
  9. 9.0.67 × 0.6 — where does the decimal point go? (a) 0.402 (b) 0.0402 (c) 4.02 (d) 0.00402
  10. 10.5.3 × 1.2 — where does the decimal point go? (a) 0.636 (b) 0.0636 (c) 63.6 (d) 6.36
  11. 11.4.9 × 4 — where does the decimal point go? (a) 0.196 (b) 19.6 (c) 1.96 (d) 196
  12. 12.0.75 × 0.9 — where does the decimal point go? (a) 0.00675 (b) 0.675 (c) 6.75 (d) 0.0675
  13. 13.0.12 × 0.8 — where does the decimal point go? (a) 0.096 (b) 0.0096 (c) 0.00096 (d) 0.96
  14. 14.8.3 × 1.7 — where does the decimal point go? (a) 1.411 (b) 14.11 (c) 141.1 (d) 0.1411
  15. 15.2.4 × 19 — where does the decimal point go? (a) 45.6 (b) 4.56 (c) 0.456 (d) 456
  16. 16.6.3 × 2.9 — where does the decimal point go? (a) 18.27 (b) 182.7 (c) 1.827 (d) 0.1827
  17. 17.0.74 × 31 — where does the decimal point go? (a) 2.294 (b) 22.94 (c) 229.4 (d) 0.2294
  18. 18.9.4 × 0.4 — where does the decimal point go? (a) 0.0376 (b) 37.6 (c) 0.376 (d) 3.76
  19. 19.0.93 × 1.1 — where does the decimal point go? (a) 0.01023 (b) 10.23 (c) 1.023 (d) 0.1023
  20. 20.0.31 × 33 — where does the decimal point go? (a) 0.1023 (b) 1.023 (c) 10.23 (d) 102.3
  21. 21.1.4 × 6 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 84 (d) 8.4
  22. 22.7.1 × 2 — where does the decimal point go? (a) 1.42 (b) 14.2 (c) 142 (d) 0.142
  23. 23.3.1 × 3 — where does the decimal point go? (a) 9.3 (b) 0.93 (c) 0.093 (d) 93
  24. 24.2.8 × 33 — where does the decimal point go? (a) 92.4 (b) 9.24 (c) 0.924 (d) 924
  25. 25.0.55 × 3.3 — where does the decimal point go? (a) 0.1815 (b) 18.15 (c) 1.815 (d) 0.01815
  26. 26.1.2 × 49 — where does the decimal point go? (a) 0.588 (b) 58.8 (c) 5.88 (d) 588
  27. 27.0.23 × 25 — where does the decimal point go? (a) 0.0575 (b) 57.5 (c) 0.575 (d) 5.75
  28. 28.0.52 × 38 — where does the decimal point go? (a) 19.76 (b) 1.976 (c) 0.1976 (d) 197.6
  29. 29.0.29 × 3.8 — where does the decimal point go? (a) 11.02 (b) 0.1102 (c) 1.102 (d) 0.01102
  30. 30.0.28 × 7 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 0.0196 (d) 19.6
  31. 31.0.27 × 2 — where does the decimal point go? (a) 0.54 (b) 0.054 (c) 0.0054 (d) 5.4
  32. 32.4.1 × 3.8 — where does the decimal point go? (a) 155.8 (b) 0.1558 (c) 1.558 (d) 15.58
  33. 33.3.4 × 2 — where does the decimal point go? (a) 0.68 (b) 68 (c) 0.068 (d) 6.8
  34. 34.8.8 × 7 — where does the decimal point go? (a) 61.6 (b) 616 (c) 6.16 (d) 0.616
  35. 35.1.2 × 0.4 — where does the decimal point go? (a) 0.0048 (b) 4.8 (c) 0.048 (d) 0.48
  36. 36.0.86 × 1.8 — where does the decimal point go? (a) 1.548 (b) 0.01548 (c) 15.48 (d) 0.1548
  37. 37.0.36 × 1.4 — where does the decimal point go? (a) 0.504 (b) 0.00504 (c) 5.04 (d) 0.0504
  38. 38.7.5 × 9 — where does the decimal point go? (a) 0.675 (b) 67.5 (c) 675 (d) 6.75
  39. 39.0.61 × 45 — where does the decimal point go? (a) 27.45 (b) 0.2745 (c) 2.745 (d) 274.5
  40. 40.7.9 × 0.9 — where does the decimal point go? (a) 7.11 (b) 71.1 (c) 0.0711 (d) 0.711

Answer key

  1. 0.432
  2. 37.6
  3. 14.96
  4. 42.4
  5. 0.56
  6. 37.2
  7. 1.78
  8. 0.752
  9. 0.402
  10. 6.36
  11. 19.6
  12. 0.675
  13. 0.096
  14. 14.11
  15. 45.6
  16. 18.27
  17. 22.94
  18. 3.76
  19. 1.023
  20. 10.23
  21. 8.4
  22. 14.2
  23. 9.3
  24. 92.4
  25. 1.815
  26. 58.8
  27. 5.75
  28. 19.76
  29. 1.102
  30. 1.96
  31. 0.54
  32. 15.58
  33. 6.8
  34. 61.6
  35. 0.48
  36. 1.548
  37. 0.504
  38. 67.5
  39. 27.45
  40. 7.11

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