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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 152 · 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. 1.0.67 × 0.3 — where does the decimal point go? (a) 0.00201 (b) 2.01 (c) 0.201 (d) 0.0201
  2. 2.0.34 × 7 — where does the decimal point go? (a) 0.238 (b) 23.8 (c) 0.0238 (d) 2.38
  3. 3.0.14 × 0.2 — where does the decimal point go? (a) 0.028 (b) 0.00028 (c) 0.0028 (d) 0.28
  4. 4.0.31 × 2 — where does the decimal point go? (a) 0.062 (b) 0.62 (c) 6.2 (d) 0.0062
  5. 5.0.16 × 48 — where does the decimal point go? (a) 0.0768 (b) 76.8 (c) 0.768 (d) 7.68
  6. 6.0.94 × 17 — where does the decimal point go? (a) 1.598 (b) 0.1598 (c) 159.8 (d) 15.98
  7. 7.0.16 × 6 — where does the decimal point go? (a) 0.096 (b) 9.6 (c) 0.0096 (d) 0.96
  8. 8.0.58 × 3.2 — where does the decimal point go? (a) 18.56 (b) 1.856 (c) 0.1856 (d) 0.01856
  9. 9.2.7 × 4.3 — where does the decimal point go? (a) 0.1161 (b) 116.1 (c) 11.61 (d) 1.161
  10. 10.0.77 × 0.3 — where does the decimal point go? (a) 0.0231 (b) 0.231 (c) 2.31 (d) 0.00231
  11. 11.0.23 × 3.2 — where does the decimal point go? (a) 0.00736 (b) 0.736 (c) 7.36 (d) 0.0736
  12. 12.8.9 × 8 — where does the decimal point go? (a) 0.712 (b) 7.12 (c) 712 (d) 71.2
  13. 13.4.2 × 4.4 — where does the decimal point go? (a) 18.48 (b) 1.848 (c) 0.1848 (d) 184.8
  14. 14.0.19 × 3 — where does the decimal point go? (a) 0.0057 (b) 5.7 (c) 0.57 (d) 0.057
  15. 15.0.44 × 26 — where does the decimal point go? (a) 0.1144 (b) 1.144 (c) 114.4 (d) 11.44
  16. 16.6.2 × 4 — where does the decimal point go? (a) 24.8 (b) 2.48 (c) 0.248 (d) 248
  17. 17.0.96 × 24 — where does the decimal point go? (a) 0.2304 (b) 230.4 (c) 23.04 (d) 2.304
  18. 18.0.75 × 41 — where does the decimal point go? (a) 3.075 (b) 0.3075 (c) 307.5 (d) 30.75
  19. 19.0.18 × 0.2 — where does the decimal point go? (a) 0.036 (b) 0.0036 (c) 0.00036 (d) 0.36
  20. 20.7.1 × 3.2 — where does the decimal point go? (a) 2.272 (b) 227.2 (c) 0.2272 (d) 22.72
  21. 21.0.32 × 14 — where does the decimal point go? (a) 4.48 (b) 0.448 (c) 44.8 (d) 0.0448
  22. 22.9.2 × 4.1 — where does the decimal point go? (a) 3.772 (b) 0.3772 (c) 37.72 (d) 377.2
  23. 23.1.2 × 0.3 — where does the decimal point go? (a) 0.036 (b) 0.0036 (c) 3.6 (d) 0.36
  24. 24.0.66 × 0.3 — where does the decimal point go? (a) 0.0198 (b) 1.98 (c) 0.198 (d) 0.00198
  25. 25.1.4 × 2 — where does the decimal point go? (a) 2.8 (b) 0.028 (c) 0.28 (d) 28
  26. 26.1.8 × 8 — where does the decimal point go? (a) 14.4 (b) 0.144 (c) 144 (d) 1.44
  27. 27.0.51 × 0.6 — where does the decimal point go? (a) 3.06 (b) 0.00306 (c) 0.0306 (d) 0.306
  28. 28.0.57 × 49 — where does the decimal point go? (a) 27.93 (b) 0.2793 (c) 2.793 (d) 279.3
  29. 29.5.9 × 2 — where does the decimal point go? (a) 11.8 (b) 118 (c) 1.18 (d) 0.118
  30. 30.0.78 × 19 — where does the decimal point go? (a) 14.82 (b) 1.482 (c) 148.2 (d) 0.1482
  31. 31.0.33 × 2.3 — where does the decimal point go? (a) 0.759 (b) 0.00759 (c) 7.59 (d) 0.0759
  32. 32.6.5 × 7 — where does the decimal point go? (a) 455 (b) 0.455 (c) 45.5 (d) 4.55
  33. 33.0.32 × 44 — where does the decimal point go? (a) 1.408 (b) 140.8 (c) 0.1408 (d) 14.08
  34. 34.6.2 × 8 — where does the decimal point go? (a) 0.496 (b) 496 (c) 49.6 (d) 4.96
  35. 35.0.62 × 0.8 — where does the decimal point go? (a) 0.0496 (b) 0.496 (c) 4.96 (d) 0.00496
  36. 36.0.51 × 3 — where does the decimal point go? (a) 15.3 (b) 0.153 (c) 1.53 (d) 0.0153
  37. 37.5.2 × 14 — where does the decimal point go? (a) 72.8 (b) 7.28 (c) 728 (d) 0.728
  38. 38.5.7 × 5 — where does the decimal point go? (a) 285 (b) 0.285 (c) 28.5 (d) 2.85
  39. 39.0.61 × 3.4 — where does the decimal point go? (a) 0.02074 (b) 2.074 (c) 20.74 (d) 0.2074
  40. 40.5.7 × 8 — where does the decimal point go? (a) 4.56 (b) 45.6 (c) 0.456 (d) 456

Answer key

  1. 0.201
  2. 2.38
  3. 0.028
  4. 0.62
  5. 7.68
  6. 15.98
  7. 0.96
  8. 1.856
  9. 11.61
  10. 0.231
  11. 0.736
  12. 71.2
  13. 18.48
  14. 0.57
  15. 11.44
  16. 24.8
  17. 23.04
  18. 30.75
  19. 0.036
  20. 22.72
  21. 4.48
  22. 37.72
  23. 0.36
  24. 0.198
  25. 2.8
  26. 14.4
  27. 0.306
  28. 27.93
  29. 11.8
  30. 14.82
  31. 0.759
  32. 45.5
  33. 14.08
  34. 49.6
  35. 0.496
  36. 1.53
  37. 72.8
  38. 28.5
  39. 2.074
  40. 45.6

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