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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 605 · 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. 1.0.28 × 4.8 — where does the decimal point go? (a) 13.44 (b) 1.344 (c) 0.1344 (d) 0.01344
  2. 2.1.2 × 0.6 — where does the decimal point go? (a) 0.0072 (b) 7.2 (c) 0.72 (d) 0.072
  3. 3.1.4 × 1.7 — where does the decimal point go? (a) 0.0238 (b) 2.38 (c) 0.238 (d) 23.8
  4. 4.0.12 × 48 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 57.6 (d) 0.576
  5. 5.0.87 × 2 — where does the decimal point go? (a) 17.4 (b) 0.174 (c) 0.0174 (d) 1.74
  6. 6.0.63 × 7 — where does the decimal point go? (a) 4.41 (b) 0.0441 (c) 0.441 (d) 44.1
  7. 7.0.83 × 6 — where does the decimal point go? (a) 4.98 (b) 49.8 (c) 0.0498 (d) 0.498
  8. 8.3.3 × 15 — where does the decimal point go? (a) 4.95 (b) 495 (c) 49.5 (d) 0.495
  9. 9.0.22 × 0.3 — where does the decimal point go? (a) 0.66 (b) 0.0066 (c) 0.066 (d) 0.00066
  10. 10.0.12 × 16 — where does the decimal point go? (a) 19.2 (b) 0.0192 (c) 0.192 (d) 1.92
  11. 11.2.8 × 0.6 — where does the decimal point go? (a) 0.168 (b) 16.8 (c) 0.0168 (d) 1.68
  12. 12.0.23 × 3 — where does the decimal point go? (a) 6.9 (b) 0.69 (c) 0.069 (d) 0.0069
  13. 13.0.23 × 2.5 — where does the decimal point go? (a) 0.00575 (b) 0.575 (c) 0.0575 (d) 5.75
  14. 14.8.1 × 3 — where does the decimal point go? (a) 24.3 (b) 2.43 (c) 243 (d) 0.243
  15. 15.3.6 × 17 — where does the decimal point go? (a) 61.2 (b) 6.12 (c) 612 (d) 0.612
  16. 16.5.4 × 6 — where does the decimal point go? (a) 324 (b) 3.24 (c) 0.324 (d) 32.4
  17. 17.5.5 × 9 — where does the decimal point go? (a) 495 (b) 49.5 (c) 0.495 (d) 4.95
  18. 18.6.4 × 16 — where does the decimal point go? (a) 1.024 (b) 102.4 (c) 10.24 (d) 1024
  19. 19.0.64 × 4 — where does the decimal point go? (a) 25.6 (b) 0.256 (c) 0.0256 (d) 2.56
  20. 20.0.74 × 3.7 — where does the decimal point go? (a) 2.738 (b) 27.38 (c) 0.2738 (d) 0.02738
  21. 21.2.9 × 2 — where does the decimal point go? (a) 0.058 (b) 58 (c) 0.58 (d) 5.8
  22. 22.4.7 × 0.6 — where does the decimal point go? (a) 2.82 (b) 0.282 (c) 0.0282 (d) 28.2
  23. 23.0.88 × 0.2 — where does the decimal point go? (a) 1.76 (b) 0.00176 (c) 0.176 (d) 0.0176
  24. 24.0.38 × 0.6 — where does the decimal point go? (a) 0.228 (b) 0.00228 (c) 2.28 (d) 0.0228
  25. 25.0.83 × 2 — where does the decimal point go? (a) 0.0166 (b) 0.166 (c) 1.66 (d) 16.6
  26. 26.2.2 × 34 — where does the decimal point go? (a) 0.748 (b) 748 (c) 74.8 (d) 7.48
  27. 27.6.8 × 1.6 — where does the decimal point go? (a) 0.1088 (b) 108.8 (c) 1.088 (d) 10.88
  28. 28.2.6 × 2.4 — where does the decimal point go? (a) 62.4 (b) 0.0624 (c) 6.24 (d) 0.624
  29. 29.7.7 × 2.9 — where does the decimal point go? (a) 0.2233 (b) 22.33 (c) 2.233 (d) 223.3
  30. 30.4.7 × 12 — where does the decimal point go? (a) 0.564 (b) 564 (c) 5.64 (d) 56.4
  31. 31.7.6 × 8 — where does the decimal point go? (a) 608 (b) 0.608 (c) 60.8 (d) 6.08
  32. 32.0.58 × 4 — where does the decimal point go? (a) 0.232 (b) 0.0232 (c) 23.2 (d) 2.32
  33. 33.1.7 × 37 — where does the decimal point go? (a) 629 (b) 62.9 (c) 6.29 (d) 0.629
  34. 34.9.8 × 0.2 — where does the decimal point go? (a) 0.0196 (b) 19.6 (c) 0.196 (d) 1.96
  35. 35.3.8 × 1.8 — where does the decimal point go? (a) 6.84 (b) 68.4 (c) 0.0684 (d) 0.684
  36. 36.6.4 × 19 — where does the decimal point go? (a) 1.216 (b) 1216 (c) 12.16 (d) 121.6
  37. 37.4.8 × 22 — where does the decimal point go? (a) 1.056 (b) 105.6 (c) 1056 (d) 10.56
  38. 38.9.6 × 0.2 — where does the decimal point go? (a) 0.0192 (b) 0.192 (c) 1.92 (d) 19.2
  39. 39.1.3 × 29 — where does the decimal point go? (a) 0.377 (b) 3.77 (c) 377 (d) 37.7
  40. 40.4.8 × 1.9 — where does the decimal point go? (a) 9.12 (b) 0.912 (c) 0.0912 (d) 91.2

Answer key

  1. 1.344
  2. 0.72
  3. 2.38
  4. 5.76
  5. 1.74
  6. 4.41
  7. 4.98
  8. 49.5
  9. 0.066
  10. 1.92
  11. 1.68
  12. 0.69
  13. 0.575
  14. 24.3
  15. 61.2
  16. 32.4
  17. 49.5
  18. 102.4
  19. 2.56
  20. 2.738
  21. 5.8
  22. 2.82
  23. 0.176
  24. 0.228
  25. 1.66
  26. 74.8
  27. 10.88
  28. 6.24
  29. 22.33
  30. 56.4
  31. 60.8
  32. 2.32
  33. 62.9
  34. 1.96
  35. 6.84
  36. 121.6
  37. 105.6
  38. 1.92
  39. 37.7
  40. 9.12

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