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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 625 · 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. 1.8.5 × 9 — where does the decimal point go? (a) 0.765 (b) 7.65 (c) 765 (d) 76.5
  2. 2.0.49 × 0.9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 0.0441 (d) 0.00441
  3. 3.8.6 × 1.1 — where does the decimal point go? (a) 94.6 (b) 0.946 (c) 9.46 (d) 0.0946
  4. 4.0.44 × 0.3 — where does the decimal point go? (a) 0.00132 (b) 0.0132 (c) 1.32 (d) 0.132
  5. 5.4.4 × 0.6 — where does the decimal point go? (a) 0.264 (b) 0.0264 (c) 26.4 (d) 2.64
  6. 6.0.79 × 5 — where does the decimal point go? (a) 0.0395 (b) 3.95 (c) 0.395 (d) 39.5
  7. 7.0.43 × 13 — where does the decimal point go? (a) 0.559 (b) 55.9 (c) 5.59 (d) 0.0559
  8. 8.0.87 × 3 — where does the decimal point go? (a) 0.261 (b) 2.61 (c) 0.0261 (d) 26.1
  9. 9.4.4 × 4 — where does the decimal point go? (a) 0.176 (b) 176 (c) 17.6 (d) 1.76
  10. 10.0.98 × 7 — where does the decimal point go? (a) 0.0686 (b) 0.686 (c) 68.6 (d) 6.86
  11. 11.0.65 × 3.3 — where does the decimal point go? (a) 21.45 (b) 0.02145 (c) 0.2145 (d) 2.145
  12. 12.0.16 × 6 — where does the decimal point go? (a) 9.6 (b) 0.0096 (c) 0.096 (d) 0.96
  13. 13.9.7 × 1.8 — where does the decimal point go? (a) 1.746 (b) 174.6 (c) 0.1746 (d) 17.46
  14. 14.1.7 × 7 — where does the decimal point go? (a) 11.9 (b) 119 (c) 1.19 (d) 0.119
  15. 15.2.1 × 9 — where does the decimal point go? (a) 18.9 (b) 0.189 (c) 189 (d) 1.89
  16. 16.2.8 × 0.9 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 0.0252 (d) 25.2
  17. 17.0.83 × 5 — where does the decimal point go? (a) 41.5 (b) 0.415 (c) 4.15 (d) 0.0415
  18. 18.0.21 × 25 — where does the decimal point go? (a) 0.0525 (b) 0.525 (c) 52.5 (d) 5.25
  19. 19.0.71 × 0.9 — where does the decimal point go? (a) 6.39 (b) 0.639 (c) 0.0639 (d) 0.00639
  20. 20.9.6 × 0.2 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 0.0192 (d) 19.2
  21. 21.8.2 × 0.4 — where does the decimal point go? (a) 0.0328 (b) 3.28 (c) 0.328 (d) 32.8
  22. 22.5.9 × 1.4 — where does the decimal point go? (a) 82.6 (b) 0.826 (c) 8.26 (d) 0.0826
  23. 23.0.53 × 13 — where does the decimal point go? (a) 68.9 (b) 0.0689 (c) 0.689 (d) 6.89
  24. 24.6.2 × 4.1 — where does the decimal point go? (a) 25.42 (b) 2.542 (c) 0.2542 (d) 254.2
  25. 25.6.2 × 32 — where does the decimal point go? (a) 1.984 (b) 19.84 (c) 1984 (d) 198.4
  26. 26.0.74 × 0.2 — where does the decimal point go? (a) 0.00148 (b) 0.0148 (c) 1.48 (d) 0.148
  27. 27.4.8 × 9 — where does the decimal point go? (a) 43.2 (b) 4.32 (c) 432 (d) 0.432
  28. 28.3.4 × 6 — where does the decimal point go? (a) 0.204 (b) 20.4 (c) 2.04 (d) 204
  29. 29.3.8 × 0.4 — where does the decimal point go? (a) 15.2 (b) 0.152 (c) 1.52 (d) 0.0152
  30. 30.0.79 × 0.6 — where does the decimal point go? (a) 0.00474 (b) 0.474 (c) 4.74 (d) 0.0474
  31. 31.6.5 × 13 — where does the decimal point go? (a) 84.5 (b) 0.845 (c) 8.45 (d) 845
  32. 32.0.91 × 14 — where does the decimal point go? (a) 127.4 (b) 12.74 (c) 0.1274 (d) 1.274
  33. 33.0.22 × 2 — where does the decimal point go? (a) 0.44 (b) 0.044 (c) 4.4 (d) 0.0044
  34. 34.8.3 × 0.7 — where does the decimal point go? (a) 0.581 (b) 0.0581 (c) 5.81 (d) 58.1
  35. 35.0.26 × 8 — where does the decimal point go? (a) 2.08 (b) 20.8 (c) 0.208 (d) 0.0208
  36. 36.8.7 × 4.6 — where does the decimal point go? (a) 400.2 (b) 0.4002 (c) 40.02 (d) 4.002
  37. 37.6.7 × 3 — where does the decimal point go? (a) 20.1 (b) 201 (c) 2.01 (d) 0.201
  38. 38.1.7 × 23 — where does the decimal point go? (a) 391 (b) 3.91 (c) 0.391 (d) 39.1
  39. 39.0.19 × 7 — where does the decimal point go? (a) 1.33 (b) 13.3 (c) 0.0133 (d) 0.133
  40. 40.0.18 × 3.7 — where does the decimal point go? (a) 0.666 (b) 0.00666 (c) 0.0666 (d) 6.66

Answer key

  1. 76.5
  2. 0.441
  3. 9.46
  4. 0.132
  5. 2.64
  6. 3.95
  7. 5.59
  8. 2.61
  9. 17.6
  10. 6.86
  11. 2.145
  12. 0.96
  13. 17.46
  14. 11.9
  15. 18.9
  16. 2.52
  17. 4.15
  18. 5.25
  19. 0.639
  20. 1.92
  21. 3.28
  22. 8.26
  23. 6.89
  24. 25.42
  25. 198.4
  26. 0.148
  27. 43.2
  28. 20.4
  29. 1.52
  30. 0.474
  31. 84.5
  32. 12.74
  33. 0.44
  34. 5.81
  35. 2.08
  36. 40.02
  37. 20.1
  38. 39.1
  39. 1.33
  40. 0.666

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