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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 993 · 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. 1.0.26 × 2.1 — where does the decimal point go? (a) 0.0546 (b) 0.00546 (c) 5.46 (d) 0.546
  2. 2.1.7 × 7 — where does the decimal point go? (a) 0.119 (b) 1.19 (c) 11.9 (d) 119
  3. 3.0.59 × 2.7 — where does the decimal point go? (a) 0.1593 (b) 15.93 (c) 1.593 (d) 0.01593
  4. 4.0.33 × 13 — where does the decimal point go? (a) 0.429 (b) 4.29 (c) 0.0429 (d) 42.9
  5. 5.0.54 × 0.3 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 0.0162 (d) 0.00162
  6. 6.0.77 × 5 — where does the decimal point go? (a) 0.0385 (b) 0.385 (c) 3.85 (d) 38.5
  7. 7.0.26 × 7 — where does the decimal point go? (a) 18.2 (b) 0.182 (c) 0.0182 (d) 1.82
  8. 8.0.27 × 6 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 16.2 (d) 0.0162
  9. 9.4.4 × 2.3 — where does the decimal point go? (a) 1.012 (b) 10.12 (c) 101.2 (d) 0.1012
  10. 10.4.6 × 8 — where does the decimal point go? (a) 368 (b) 3.68 (c) 36.8 (d) 0.368
  11. 11.7.7 × 4.1 — where does the decimal point go? (a) 315.7 (b) 3.157 (c) 0.3157 (d) 31.57
  12. 12.0.49 × 17 — where does the decimal point go? (a) 8.33 (b) 0.0833 (c) 83.3 (d) 0.833
  13. 13.0.43 × 2 — where does the decimal point go? (a) 0.86 (b) 8.6 (c) 0.0086 (d) 0.086
  14. 14.5.6 × 17 — where does the decimal point go? (a) 0.952 (b) 952 (c) 95.2 (d) 9.52
  15. 15.4.8 × 1.2 — where does the decimal point go? (a) 57.6 (b) 0.0576 (c) 5.76 (d) 0.576
  16. 16.0.76 × 1.3 — where does the decimal point go? (a) 0.00988 (b) 0.0988 (c) 0.988 (d) 9.88
  17. 17.0.21 × 15 — where does the decimal point go? (a) 0.315 (b) 3.15 (c) 0.0315 (d) 31.5
  18. 18.3.6 × 4.6 — where does the decimal point go? (a) 1.656 (b) 165.6 (c) 0.1656 (d) 16.56
  19. 19.9.6 × 3 — where does the decimal point go? (a) 2.88 (b) 28.8 (c) 288 (d) 0.288
  20. 20.0.57 × 0.2 — where does the decimal point go? (a) 1.14 (b) 0.114 (c) 0.0114 (d) 0.00114
  21. 21.6.8 × 33 — where does the decimal point go? (a) 2.244 (b) 2244 (c) 22.44 (d) 224.4
  22. 22.2.4 × 6 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 144 (d) 14.4
  23. 23.0.13 × 13 — where does the decimal point go? (a) 0.0169 (b) 1.69 (c) 0.169 (d) 16.9
  24. 24.0.74 × 44 — where does the decimal point go? (a) 0.3256 (b) 325.6 (c) 32.56 (d) 3.256
  25. 25.0.18 × 0.8 — where does the decimal point go? (a) 0.0144 (b) 0.144 (c) 1.44 (d) 0.00144
  26. 26.9.2 × 41 — where does the decimal point go? (a) 377.2 (b) 3.772 (c) 3772 (d) 37.72
  27. 27.3.2 × 4.1 — where does the decimal point go? (a) 13.12 (b) 131.2 (c) 1.312 (d) 0.1312
  28. 28.2.3 × 2.9 — where does the decimal point go? (a) 0.667 (b) 0.0667 (c) 6.67 (d) 66.7
  29. 29.0.37 × 34 — where does the decimal point go? (a) 1.258 (b) 125.8 (c) 12.58 (d) 0.1258
  30. 30.0.87 × 44 — where does the decimal point go? (a) 382.8 (b) 0.3828 (c) 3.828 (d) 38.28
  31. 31.0.61 × 19 — where does the decimal point go? (a) 0.1159 (b) 1.159 (c) 115.9 (d) 11.59
  32. 32.1.4 × 4.8 — where does the decimal point go? (a) 0.0672 (b) 6.72 (c) 0.672 (d) 67.2
  33. 33.1.6 × 0.9 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 14.4 (d) 1.44
  34. 34.0.76 × 3 — where does the decimal point go? (a) 22.8 (b) 0.0228 (c) 2.28 (d) 0.228
  35. 35.0.14 × 4.4 — where does the decimal point go? (a) 0.0616 (b) 0.00616 (c) 6.16 (d) 0.616
  36. 36.5.5 × 29 — where does the decimal point go? (a) 1.595 (b) 15.95 (c) 1595 (d) 159.5
  37. 37.3.7 × 0.2 — where does the decimal point go? (a) 0.0074 (b) 0.074 (c) 0.74 (d) 7.4
  38. 38.7.3 × 2 — where does the decimal point go? (a) 1.46 (b) 0.146 (c) 14.6 (d) 146
  39. 39.3.1 × 1.7 — where does the decimal point go? (a) 0.527 (b) 52.7 (c) 0.0527 (d) 5.27
  40. 40.0.29 × 12 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 0.0348 (d) 34.8

Answer key

  1. 0.546
  2. 11.9
  3. 1.593
  4. 4.29
  5. 0.162
  6. 3.85
  7. 1.82
  8. 1.62
  9. 10.12
  10. 36.8
  11. 31.57
  12. 8.33
  13. 0.86
  14. 95.2
  15. 5.76
  16. 0.988
  17. 3.15
  18. 16.56
  19. 28.8
  20. 0.114
  21. 224.4
  22. 14.4
  23. 1.69
  24. 32.56
  25. 0.144
  26. 377.2
  27. 13.12
  28. 6.67
  29. 12.58
  30. 38.28
  31. 11.59
  32. 6.72
  33. 1.44
  34. 2.28
  35. 0.616
  36. 159.5
  37. 0.74
  38. 14.6
  39. 5.27
  40. 3.48

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