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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 769 · 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. 1.0.99 × 6 — where does the decimal point go? (a) 0.594 (b) 0.0594 (c) 5.94 (d) 59.4
  2. 2.4.2 × 2.7 — where does the decimal point go? (a) 113.4 (b) 1.134 (c) 0.1134 (d) 11.34
  3. 3.0.44 × 0.8 — where does the decimal point go? (a) 0.0352 (b) 3.52 (c) 0.00352 (d) 0.352
  4. 4.1.9 × 3 — where does the decimal point go? (a) 0.057 (b) 0.57 (c) 57 (d) 5.7
  5. 5.4.2 × 0.3 — where does the decimal point go? (a) 0.126 (b) 0.0126 (c) 1.26 (d) 12.6
  6. 6.0.31 × 0.2 — where does the decimal point go? (a) 0.00062 (b) 0.062 (c) 0.0062 (d) 0.62
  7. 7.3.4 × 2 — where does the decimal point go? (a) 0.068 (b) 6.8 (c) 0.68 (d) 68
  8. 8.6.3 × 46 — where does the decimal point go? (a) 28.98 (b) 2.898 (c) 289.8 (d) 2898
  9. 9.0.41 × 3.6 — where does the decimal point go? (a) 0.01476 (b) 1.476 (c) 0.1476 (d) 14.76
  10. 10.7.5 × 4.3 — where does the decimal point go? (a) 322.5 (b) 0.3225 (c) 3.225 (d) 32.25
  11. 11.9.5 × 0.7 — where does the decimal point go? (a) 0.0665 (b) 6.65 (c) 66.5 (d) 0.665
  12. 12.0.18 × 6 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.0108 (d) 10.8
  13. 13.7.5 × 0.5 — where does the decimal point go? (a) 0.375 (b) 0.0375 (c) 3.75 (d) 37.5
  14. 14.1.8 × 0.8 — where does the decimal point go? (a) 1.44 (b) 0.0144 (c) 0.144 (d) 14.4
  15. 15.4.6 × 22 — where does the decimal point go? (a) 1.012 (b) 101.2 (c) 10.12 (d) 1012
  16. 16.0.98 × 43 — where does the decimal point go? (a) 0.4214 (b) 42.14 (c) 421.4 (d) 4.214
  17. 17.0.64 × 3.7 — where does the decimal point go? (a) 2.368 (b) 23.68 (c) 0.2368 (d) 0.02368
  18. 18.4.9 × 5 — where does the decimal point go? (a) 2.45 (b) 0.245 (c) 24.5 (d) 245
  19. 19.0.36 × 2.3 — where does the decimal point go? (a) 0.0828 (b) 0.00828 (c) 0.828 (d) 8.28
  20. 20.0.54 × 0.4 — where does the decimal point go? (a) 0.0216 (b) 0.00216 (c) 0.216 (d) 2.16
  21. 21.4.1 × 2.3 — where does the decimal point go? (a) 9.43 (b) 0.943 (c) 94.3 (d) 0.0943
  22. 22.1.3 × 49 — where does the decimal point go? (a) 63.7 (b) 0.637 (c) 637 (d) 6.37
  23. 23.0.27 × 3.7 — where does the decimal point go? (a) 0.0999 (b) 0.999 (c) 0.00999 (d) 9.99
  24. 24.0.23 × 0.5 — where does the decimal point go? (a) 0.115 (b) 0.00115 (c) 0.0115 (d) 1.15
  25. 25.0.31 × 4 — where does the decimal point go? (a) 0.124 (b) 1.24 (c) 0.0124 (d) 12.4
  26. 26.0.64 × 4.6 — where does the decimal point go? (a) 2.944 (b) 0.2944 (c) 0.02944 (d) 29.44
  27. 27.1.8 × 3.8 — where does the decimal point go? (a) 68.4 (b) 6.84 (c) 0.0684 (d) 0.684
  28. 28.8.4 × 7 — where does the decimal point go? (a) 58.8 (b) 0.588 (c) 5.88 (d) 588
  29. 29.0.32 × 37 — where does the decimal point go? (a) 11.84 (b) 118.4 (c) 0.1184 (d) 1.184
  30. 30.4.5 × 13 — where does the decimal point go? (a) 58.5 (b) 585 (c) 5.85 (d) 0.585
  31. 31.1.2 × 36 — where does the decimal point go? (a) 4.32 (b) 0.432 (c) 432 (d) 43.2
  32. 32.0.67 × 3 — where does the decimal point go? (a) 20.1 (b) 0.0201 (c) 2.01 (d) 0.201
  33. 33.0.41 × 28 — where does the decimal point go? (a) 1.148 (b) 0.1148 (c) 11.48 (d) 114.8
  34. 34.0.23 × 33 — where does the decimal point go? (a) 7.59 (b) 0.0759 (c) 75.9 (d) 0.759
  35. 35.0.63 × 2 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 0.126 (d) 0.0126
  36. 36.2.4 × 0.3 — where does the decimal point go? (a) 7.2 (b) 0.0072 (c) 0.72 (d) 0.072
  37. 37.3.2 × 6 — where does the decimal point go? (a) 0.192 (b) 1.92 (c) 192 (d) 19.2
  38. 38.0.14 × 48 — where does the decimal point go? (a) 67.2 (b) 0.0672 (c) 6.72 (d) 0.672
  39. 39.3.7 × 0.6 — where does the decimal point go? (a) 2.22 (b) 0.0222 (c) 22.2 (d) 0.222
  40. 40.4.8 × 0.9 — where does the decimal point go? (a) 43.2 (b) 0.432 (c) 0.0432 (d) 4.32

Answer key

  1. 5.94
  2. 11.34
  3. 0.352
  4. 5.7
  5. 1.26
  6. 0.062
  7. 6.8
  8. 289.8
  9. 1.476
  10. 32.25
  11. 6.65
  12. 1.08
  13. 3.75
  14. 1.44
  15. 101.2
  16. 42.14
  17. 2.368
  18. 24.5
  19. 0.828
  20. 0.216
  21. 9.43
  22. 63.7
  23. 0.999
  24. 0.115
  25. 1.24
  26. 2.944
  27. 6.84
  28. 58.8
  29. 11.84
  30. 58.5
  31. 43.2
  32. 2.01
  33. 11.48
  34. 7.59
  35. 1.26
  36. 0.72
  37. 19.2
  38. 6.72
  39. 2.22
  40. 4.32

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