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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 178 · 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. 1.0.88 × 0.3 — where does the decimal point go? (a) 0.264 (b) 0.00264 (c) 0.0264 (d) 2.64
  2. 2.7.1 × 37 — where does the decimal point go? (a) 26.27 (b) 2627 (c) 2.627 (d) 262.7
  3. 3.0.18 × 1.1 — where does the decimal point go? (a) 0.198 (b) 0.00198 (c) 0.0198 (d) 1.98
  4. 4.0.41 × 2 — where does the decimal point go? (a) 0.082 (b) 0.0082 (c) 8.2 (d) 0.82
  5. 5.0.46 × 7 — where does the decimal point go? (a) 32.2 (b) 3.22 (c) 0.322 (d) 0.0322
  6. 6.8.2 × 3.2 — where does the decimal point go? (a) 26.24 (b) 0.2624 (c) 2.624 (d) 262.4
  7. 7.0.33 × 6 — where does the decimal point go? (a) 0.0198 (b) 1.98 (c) 19.8 (d) 0.198
  8. 8.0.17 × 4 — where does the decimal point go? (a) 0.0068 (b) 6.8 (c) 0.68 (d) 0.068
  9. 9.0.84 × 4.9 — where does the decimal point go? (a) 0.4116 (b) 4.116 (c) 0.04116 (d) 41.16
  10. 10.0.19 × 4 — where does the decimal point go? (a) 0.0076 (b) 0.076 (c) 7.6 (d) 0.76
  11. 11.0.96 × 27 — where does the decimal point go? (a) 0.2592 (b) 2.592 (c) 259.2 (d) 25.92
  12. 12.0.91 × 39 — where does the decimal point go? (a) 35.49 (b) 0.3549 (c) 3.549 (d) 354.9
  13. 13.7.3 × 0.4 — where does the decimal point go? (a) 2.92 (b) 0.0292 (c) 0.292 (d) 29.2
  14. 14.0.99 × 0.8 — where does the decimal point go? (a) 0.792 (b) 0.0792 (c) 7.92 (d) 0.00792
  15. 15.0.37 × 3 — where does the decimal point go? (a) 11.1 (b) 1.11 (c) 0.111 (d) 0.0111
  16. 16.0.49 × 2 — where does the decimal point go? (a) 9.8 (b) 0.0098 (c) 0.98 (d) 0.098
  17. 17.6.7 × 2.2 — where does the decimal point go? (a) 0.1474 (b) 1.474 (c) 147.4 (d) 14.74
  18. 18.7.5 × 0.5 — where does the decimal point go? (a) 3.75 (b) 0.0375 (c) 37.5 (d) 0.375
  19. 19.7.5 × 15 — where does the decimal point go? (a) 1125 (b) 1.125 (c) 112.5 (d) 11.25
  20. 20.6.8 × 0.2 — where does the decimal point go? (a) 13.6 (b) 1.36 (c) 0.0136 (d) 0.136
  21. 21.6.2 × 0.7 — where does the decimal point go? (a) 43.4 (b) 4.34 (c) 0.434 (d) 0.0434
  22. 22.0.87 × 5 — where does the decimal point go? (a) 0.0435 (b) 43.5 (c) 0.435 (d) 4.35
  23. 23.8.1 × 17 — where does the decimal point go? (a) 1.377 (b) 137.7 (c) 1377 (d) 13.77
  24. 24.0.29 × 9 — where does the decimal point go? (a) 0.0261 (b) 2.61 (c) 0.261 (d) 26.1
  25. 25.3.9 × 1.2 — where does the decimal point go? (a) 46.8 (b) 0.0468 (c) 0.468 (d) 4.68
  26. 26.0.44 × 0.2 — where does the decimal point go? (a) 0.0088 (b) 0.88 (c) 0.088 (d) 0.00088
  27. 27.0.99 × 26 — where does the decimal point go? (a) 25.74 (b) 257.4 (c) 2.574 (d) 0.2574
  28. 28.4.8 × 6 — where does the decimal point go? (a) 2.88 (b) 288 (c) 28.8 (d) 0.288
  29. 29.0.73 × 34 — where does the decimal point go? (a) 2.482 (b) 0.2482 (c) 248.2 (d) 24.82
  30. 30.3.3 × 34 — where does the decimal point go? (a) 112.2 (b) 11.22 (c) 1122 (d) 1.122
  31. 31.6.1 × 7 — where does the decimal point go? (a) 427 (b) 4.27 (c) 0.427 (d) 42.7
  32. 32.5.7 × 8 — where does the decimal point go? (a) 456 (b) 4.56 (c) 45.6 (d) 0.456
  33. 33.8.1 × 0.8 — where does the decimal point go? (a) 64.8 (b) 0.648 (c) 6.48 (d) 0.0648
  34. 34.9.6 × 8 — where does the decimal point go? (a) 0.768 (b) 76.8 (c) 768 (d) 7.68
  35. 35.9.3 × 3.6 — where does the decimal point go? (a) 0.3348 (b) 334.8 (c) 33.48 (d) 3.348
  36. 36.4.6 × 2 — where does the decimal point go? (a) 92 (b) 0.92 (c) 0.092 (d) 9.2
  37. 37.8.3 × 11 — where does the decimal point go? (a) 0.913 (b) 913 (c) 91.3 (d) 9.13
  38. 38.3.9 × 21 — where does the decimal point go? (a) 81.9 (b) 0.819 (c) 819 (d) 8.19
  39. 39.9.2 × 2.8 — where does the decimal point go? (a) 2.576 (b) 0.2576 (c) 257.6 (d) 25.76
  40. 40.0.81 × 9 — where does the decimal point go? (a) 0.0729 (b) 72.9 (c) 0.729 (d) 7.29

Answer key

  1. 0.264
  2. 262.7
  3. 0.198
  4. 0.82
  5. 3.22
  6. 26.24
  7. 1.98
  8. 0.68
  9. 4.116
  10. 0.76
  11. 25.92
  12. 35.49
  13. 2.92
  14. 0.792
  15. 1.11
  16. 0.98
  17. 14.74
  18. 3.75
  19. 112.5
  20. 1.36
  21. 4.34
  22. 4.35
  23. 137.7
  24. 2.61
  25. 4.68
  26. 0.088
  27. 25.74
  28. 28.8
  29. 24.82
  30. 112.2
  31. 42.7
  32. 45.6
  33. 6.48
  34. 76.8
  35. 33.48
  36. 9.2
  37. 91.3
  38. 81.9
  39. 25.76
  40. 7.29

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