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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 992 · 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. 1.0.18 × 33 — where does the decimal point go? (a) 5.94 (b) 0.594 (c) 59.4 (d) 0.0594
  2. 2.1.8 × 11 — where does the decimal point go? (a) 0.198 (b) 198 (c) 19.8 (d) 1.98
  3. 3.0.51 × 5 — where does the decimal point go? (a) 0.0255 (b) 25.5 (c) 2.55 (d) 0.255
  4. 4.7.3 × 3 — where does the decimal point go? (a) 2.19 (b) 0.219 (c) 219 (d) 21.9
  5. 5.5.9 × 8 — where does the decimal point go? (a) 47.2 (b) 472 (c) 4.72 (d) 0.472
  6. 6.0.63 × 4 — where does the decimal point go? (a) 0.0252 (b) 0.252 (c) 25.2 (d) 2.52
  7. 7.0.63 × 6 — where does the decimal point go? (a) 37.8 (b) 0.0378 (c) 3.78 (d) 0.378
  8. 8.8.9 × 46 — where does the decimal point go? (a) 4094 (b) 409.4 (c) 4.094 (d) 40.94
  9. 9.1.7 × 32 — where does the decimal point go? (a) 54.4 (b) 0.544 (c) 544 (d) 5.44
  10. 10.9.4 × 0.4 — where does the decimal point go? (a) 0.0376 (b) 0.376 (c) 3.76 (d) 37.6
  11. 11.0.21 × 0.6 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.00126 (d) 0.126
  12. 12.0.36 × 2 — where does the decimal point go? (a) 0.072 (b) 7.2 (c) 0.0072 (d) 0.72
  13. 13.8.5 × 1.3 — where does the decimal point go? (a) 11.05 (b) 0.1105 (c) 110.5 (d) 1.105
  14. 14.0.29 × 3 — where does the decimal point go? (a) 0.0087 (b) 8.7 (c) 0.087 (d) 0.87
  15. 15.7.7 × 2.4 — where does the decimal point go? (a) 0.1848 (b) 184.8 (c) 18.48 (d) 1.848
  16. 16.3.4 × 8 — where does the decimal point go? (a) 272 (b) 2.72 (c) 27.2 (d) 0.272
  17. 17.0.84 × 2.8 — where does the decimal point go? (a) 2.352 (b) 0.2352 (c) 0.02352 (d) 23.52
  18. 18.0.96 × 0.2 — where does the decimal point go? (a) 0.192 (b) 1.92 (c) 0.0192 (d) 0.00192
  19. 19.0.51 × 3 — where does the decimal point go? (a) 1.53 (b) 0.153 (c) 15.3 (d) 0.0153
  20. 20.9.1 × 0.3 — where does the decimal point go? (a) 0.0273 (b) 2.73 (c) 27.3 (d) 0.273
  21. 21.6.6 × 1.7 — where does the decimal point go? (a) 1.122 (b) 0.1122 (c) 112.2 (d) 11.22
  22. 22.3.9 × 4.9 — where does the decimal point go? (a) 191.1 (b) 1.911 (c) 19.11 (d) 0.1911
  23. 23.0.24 × 2 — where does the decimal point go? (a) 0.048 (b) 0.0048 (c) 0.48 (d) 4.8
  24. 24.0.29 × 1.1 — where does the decimal point go? (a) 0.00319 (b) 0.319 (c) 3.19 (d) 0.0319
  25. 25.1.9 × 4 — where does the decimal point go? (a) 76 (b) 0.76 (c) 0.076 (d) 7.6
  26. 26.2.4 × 1.1 — where does the decimal point go? (a) 2.64 (b) 0.0264 (c) 26.4 (d) 0.264
  27. 27.9.2 × 44 — where does the decimal point go? (a) 4048 (b) 4.048 (c) 404.8 (d) 40.48
  28. 28.0.93 × 9 — where does the decimal point go? (a) 8.37 (b) 0.837 (c) 0.0837 (d) 83.7
  29. 29.8.4 × 8 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 67.2 (d) 672
  30. 30.1.2 × 0.3 — where does the decimal point go? (a) 0.36 (b) 0.0036 (c) 3.6 (d) 0.036
  31. 31.0.79 × 9 — where does the decimal point go? (a) 0.711 (b) 7.11 (c) 71.1 (d) 0.0711
  32. 32.2.9 × 0.6 — where does the decimal point go? (a) 0.174 (b) 0.0174 (c) 17.4 (d) 1.74
  33. 33.0.68 × 12 — where does the decimal point go? (a) 0.0816 (b) 0.816 (c) 81.6 (d) 8.16
  34. 34.7.6 × 4.1 — where does the decimal point go? (a) 311.6 (b) 3.116 (c) 0.3116 (d) 31.16
  35. 35.0.84 × 4.3 — where does the decimal point go? (a) 0.3612 (b) 36.12 (c) 3.612 (d) 0.03612
  36. 36.0.56 × 0.2 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 0.00112 (d) 0.0112
  37. 37.5.8 × 0.6 — where does the decimal point go? (a) 0.0348 (b) 34.8 (c) 3.48 (d) 0.348
  38. 38.6.4 × 21 — where does the decimal point go? (a) 13.44 (b) 134.4 (c) 1344 (d) 1.344
  39. 39.0.44 × 3.6 — where does the decimal point go? (a) 15.84 (b) 0.01584 (c) 0.1584 (d) 1.584
  40. 40.4.4 × 22 — where does the decimal point go? (a) 96.8 (b) 0.968 (c) 968 (d) 9.68

Answer key

  1. 5.94
  2. 19.8
  3. 2.55
  4. 21.9
  5. 47.2
  6. 2.52
  7. 3.78
  8. 409.4
  9. 54.4
  10. 3.76
  11. 0.126
  12. 0.72
  13. 11.05
  14. 0.87
  15. 18.48
  16. 27.2
  17. 2.352
  18. 0.192
  19. 1.53
  20. 2.73
  21. 11.22
  22. 19.11
  23. 0.48
  24. 0.319
  25. 7.6
  26. 2.64
  27. 404.8
  28. 8.37
  29. 67.2
  30. 0.36
  31. 7.11
  32. 1.74
  33. 8.16
  34. 31.16
  35. 3.612
  36. 0.112
  37. 3.48
  38. 134.4
  39. 1.584
  40. 96.8

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