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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 190 · 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. 1.1.6 × 2 — where does the decimal point go? (a) 0.32 (b) 32 (c) 0.032 (d) 3.2
  2. 2.7.6 × 7 — where does the decimal point go? (a) 5.32 (b) 532 (c) 0.532 (d) 53.2
  3. 3.0.31 × 0.3 — where does the decimal point go? (a) 0.93 (b) 0.00093 (c) 0.093 (d) 0.0093
  4. 4.1.8 × 14 — where does the decimal point go? (a) 2.52 (b) 0.252 (c) 252 (d) 25.2
  5. 5.7.8 × 2 — where does the decimal point go? (a) 15.6 (b) 156 (c) 1.56 (d) 0.156
  6. 6.7.1 × 1.5 — where does the decimal point go? (a) 1.065 (b) 0.1065 (c) 10.65 (d) 106.5
  7. 7.0.93 × 15 — where does the decimal point go? (a) 139.5 (b) 0.1395 (c) 1.395 (d) 13.95
  8. 8.0.78 × 0.7 — where does the decimal point go? (a) 0.0546 (b) 0.546 (c) 5.46 (d) 0.00546
  9. 9.1.4 × 1.3 — where does the decimal point go? (a) 0.0182 (b) 1.82 (c) 18.2 (d) 0.182
  10. 10.1.9 × 11 — where does the decimal point go? (a) 2.09 (b) 209 (c) 0.209 (d) 20.9
  11. 11.8.3 × 3.9 — where does the decimal point go? (a) 32.37 (b) 3.237 (c) 323.7 (d) 0.3237
  12. 12.0.13 × 0.7 — where does the decimal point go? (a) 0.0091 (b) 0.91 (c) 0.091 (d) 0.00091
  13. 13.0.83 × 0.3 — where does the decimal point go? (a) 0.0249 (b) 0.00249 (c) 2.49 (d) 0.249
  14. 14.4.3 × 0.9 — where does the decimal point go? (a) 0.387 (b) 38.7 (c) 0.0387 (d) 3.87
  15. 15.2.5 × 0.7 — where does the decimal point go? (a) 17.5 (b) 0.175 (c) 0.0175 (d) 1.75
  16. 16.0.93 × 42 — where does the decimal point go? (a) 390.6 (b) 39.06 (c) 0.3906 (d) 3.906
  17. 17.0.35 × 15 — where does the decimal point go? (a) 0.0525 (b) 52.5 (c) 0.525 (d) 5.25
  18. 18.0.32 × 7 — where does the decimal point go? (a) 0.0224 (b) 22.4 (c) 2.24 (d) 0.224
  19. 19.8.9 × 0.4 — where does the decimal point go? (a) 0.0356 (b) 0.356 (c) 3.56 (d) 35.6
  20. 20.0.17 × 2.1 — where does the decimal point go? (a) 0.00357 (b) 0.357 (c) 0.0357 (d) 3.57
  21. 21.7.2 × 1.4 — where does the decimal point go? (a) 0.1008 (b) 100.8 (c) 10.08 (d) 1.008
  22. 22.0.85 × 33 — where does the decimal point go? (a) 2.805 (b) 0.2805 (c) 28.05 (d) 280.5
  23. 23.0.13 × 5 — where does the decimal point go? (a) 0.0065 (b) 6.5 (c) 0.65 (d) 0.065
  24. 24.8.3 × 0.4 — where does the decimal point go? (a) 33.2 (b) 0.332 (c) 3.32 (d) 0.0332
  25. 25.6.4 × 2.1 — where does the decimal point go? (a) 13.44 (b) 1.344 (c) 134.4 (d) 0.1344
  26. 26.9.1 × 31 — where does the decimal point go? (a) 282.1 (b) 2821 (c) 28.21 (d) 2.821
  27. 27.0.74 × 4 — where does the decimal point go? (a) 0.0296 (b) 29.6 (c) 0.296 (d) 2.96
  28. 28.0.38 × 0.2 — where does the decimal point go? (a) 0.076 (b) 0.0076 (c) 0.76 (d) 0.00076
  29. 29.9.9 × 6 — where does the decimal point go? (a) 0.594 (b) 5.94 (c) 594 (d) 59.4
  30. 30.3.6 × 0.7 — where does the decimal point go? (a) 25.2 (b) 0.252 (c) 2.52 (d) 0.0252
  31. 31.7.6 × 0.9 — where does the decimal point go? (a) 68.4 (b) 6.84 (c) 0.684 (d) 0.0684
  32. 32.0.24 × 0.6 — where does the decimal point go? (a) 0.00144 (b) 1.44 (c) 0.0144 (d) 0.144
  33. 33.0.47 × 5 — where does the decimal point go? (a) 0.235 (b) 23.5 (c) 2.35 (d) 0.0235
  34. 34.5.1 × 2.7 — where does the decimal point go? (a) 137.7 (b) 1.377 (c) 0.1377 (d) 13.77
  35. 35.4.9 × 0.8 — where does the decimal point go? (a) 3.92 (b) 0.392 (c) 0.0392 (d) 39.2
  36. 36.0.83 × 8 — where does the decimal point go? (a) 0.0664 (b) 6.64 (c) 0.664 (d) 66.4
  37. 37.8.6 × 9 — where does the decimal point go? (a) 77.4 (b) 7.74 (c) 0.774 (d) 774
  38. 38.0.53 × 35 — where does the decimal point go? (a) 185.5 (b) 0.1855 (c) 18.55 (d) 1.855
  39. 39.7.7 × 6 — where does the decimal point go? (a) 46.2 (b) 0.462 (c) 4.62 (d) 462
  40. 40.1.2 × 0.7 — where does the decimal point go? (a) 0.0084 (b) 0.084 (c) 0.84 (d) 8.4

Answer key

  1. 3.2
  2. 53.2
  3. 0.093
  4. 25.2
  5. 15.6
  6. 10.65
  7. 13.95
  8. 0.546
  9. 1.82
  10. 20.9
  11. 32.37
  12. 0.091
  13. 0.249
  14. 3.87
  15. 1.75
  16. 39.06
  17. 5.25
  18. 2.24
  19. 3.56
  20. 0.357
  21. 10.08
  22. 28.05
  23. 0.65
  24. 3.32
  25. 13.44
  26. 282.1
  27. 2.96
  28. 0.076
  29. 59.4
  30. 2.52
  31. 6.84
  32. 0.144
  33. 2.35
  34. 13.77
  35. 3.92
  36. 6.64
  37. 77.4
  38. 18.55
  39. 46.2
  40. 0.84

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